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C Program to Find Transpose of a Matrix

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This post explains to find tanspose of a matrix using the C programming language.

C Program to Find Transpose of a Matrix

Run Code Snippet
#include <stdio.h>
int main()
{
  int row,col,i,j,A[10][10],B[10][10];
  printf("\n Enter the number of rows and columns of a A: ");
  scanf("%d %d", &row, &col);
  printf("\n Enter elements of the A: ");
  for (i=0;i<row;i++)
  {
      for (j=0;j<col;j++)
      {
          scanf("%d", &A[i][j]);
      }
  }
  for (i=0;i<row;i++)
  {
      for (j=0;j<col;j++)
      {
          B[j][i]=A[i][j];
      }
  }
  printf("\n Transpose of the A: \n");
  for (i=0;i<col;i++) 
  {
    for (j=0;j<row;j++)
    {
        printf("%d \t", B[i][j]);
        printf("\n");
    }
  }
  return 0;
}

Output

Explanation

In this C program, we transpose the elements using the following variables A, B, row, col, i, j, whereas both A and B used as the array size of the matrix, and row, col, i, j,  used as the variables to differentiate the rows and columns in the matrix. We also allow the user to enter the values in the matrix. 

int row,col,i,j,A[10][10],B[10][10];
  printf("\n Enter the number of rows and columns of a A: ");
  scanf("%d %d", &row, &col);
  printf("\n Enter elements of the A: ");
  for (i=0;i<row;i++)
  {
      for (j=0;j<col;j++)
      {
          scanf("%d", &A[i][j]);
      }
  }
  for (i=0;i<row;i++)
  {
      for (j=0;j<col;j++)
      {
          B[j][i]=A[i][j];
      }
  }

We now proceed further with the calculation part, where we transpose the elements from columns to rows and vice-versa, and then print the terminal result.

printf("\n Transpose of the A: \n");
  for (i=0;i<col;i++) 
  {
    for (j=0;j<row;j++)
    {
        printf("%d \t", B[i][j]);
        printf("\n");
    }
  }

We have now obtained the fancied result/output.

C Program to Add Two Matrices Using Multi-dimensional Arrays

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This post helps add two matrices using multi-dimensional arrays in the C programming language.

C Program to Add Two Matrices Using Multi-dimensional Arrays

Run Code Snippet
#include <stdio.h>
int main()
{
    int A[10][10],B[10][10],C[10][10],i,j,row,col;
    printf("\n Enter row and column: ");
    scanf("%d %d",&row,&col);
    printf("\n Enter A matrix");
    for(i=0;i<row;i++)
    {
        for(j=0;j<col;j++)
        {
            scanf("%d",&A[i][j]);
        }
    }
    printf("\n Enter B matrix");
    for(i=0;i<row;i++)
    {
        for(j=0;j<col;j++)
        {
            scanf("%d",&B[i][j]);
        }
    }        
    printf("\n Sum of the two matrices: \n ");
    for(i=0;i<row;i++)
    {
        for(j=0;j<col;j++)
        {
            C[i][j]=A[i][j]+B[i][j];
            printf("%d \t",C[i][j]);
        }
        printf("\n");
    }
    return 0;
}

Output

Explanation

In this C program, we have initialized several variables to do the calculation. Here, the variables initialized are A, B, C used as an array of size for the matrices and i, j, row, and col used for differentiating the rows and columns of the matrix. We also allow the user to enter the rows and columns for both the matrices.

	int A[10][10],B[10][10],C[10][10],i,j,row,col;
    printf("\n Enter row and column: ");
    scanf("%d %d",&row,&col);
    printf("\n Enter A matrix");
    for(i=0;i<row;i++)
    {
        for(j=0;j<col;j++)
        {
            scanf("%d",&A[i][j]);
        }
    }
    printf("\n Enter B matrix");
    for(i=0;i<row;i++)
    {
        for(j=0;j<col;j++)
        {
            scanf("%d",&B[i][j]);
        }
    }

Now we proceed further for the calculation part, where we add, both the matrix A and B, the following will be displayed in the C matrix.

	printf("\n Sum of the two matrices: \n ");
    for(i=0;i<row;i++)
    {
        for(j=0;j<col;j++)
        {
            C[i][j]=A[i][j]+B[i][j];
            printf("%d \t",C[i][j]);
        }

We have now obtained the fancied output.

C Program to Multiply Two Matrices Using Multi-dimensional Arrays

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This post multiplies two matrices using multi-dimensional arrays in the C programming language.

C Program to Multiply Two Matrices Using Multi-dimensional Arrays

Run Code Snippet
#include <stdio.h>
int main()
{
    int m, n, p, q, i, j, k, sum = 0;
    int A[10][10], B[10][10], C[10][10];
    printf("Enter number of rows and columns of A matrix\n");
    scanf("%d %d", &m, &n);
    printf("Enter elements of A matrix\n");
    for (i = 0; i < m; i++)
    for (j = 0; j < n; j++)
    scanf("%d", &A[i][j]);
    printf("Enter number of rows and columns of B matrix\n");
    scanf("%d %d", &p, &q);
    if (n != p)
    printf("The multiplication of matrix not possible \n");
    else
    {
        printf("Enter elements of B matrix\n");
        for (i = 0; i < p; i++)
        for (j = 0; j < q; j++)
        scanf("%d", &B[i][j]);
        for (i = 0; i < m; i++) 
        {
            for (j = 0; j < q; j++) 
            {
                for (k = 0; k < p; k++) 
                {
                    sum = sum + A[i][k]*B[k][j];
                }
                C[i][j] = sum;
                sum = 0;
            }
        }
        printf("Product of the matrices:\n");
        for (i = 0; i < m; i++) 
        {
            for (j = 0; j < q; j++)
            printf("%d\t", C[i][j]);
            printf("\n");
        }
    }
    return 0;
    }

Output

Explanation

In this C program, we use many variables for storing various values and for performing different calculations. Here we have initialized three array values for doing the multiplication of matrices. We also allow the user to enter the values to the variables m, n, p, q.

 	int m, n, p, q, i, j, k, sum = 0;
    int A[10][10], B[10][10], C[10][10];
    printf("Enter number of rows and columns of A matrix\n");
    scanf("%d %d", &m, &n);
    printf("Enter elements of A matrix\n");
    for (i = 0; i < m; i++)
    for (j = 0; j < n; j++)
    scanf("%d", &A[i][j]);
    printf("Enter number of rows and columns of B matrix\n");
    scanf("%d %d", &p, &q);

Now we have used the if-else condition to check whether the condition, satisfies the following calculation. We now utilize the variable sum to do the calculation, where we have previously addressed the sum as zero(sum=0). If the given is condition is satisfied then we will proceed towards the result and, if the given condition is not satisfied, then the multiplication will not be possibly done.

if (n != p)
    printf("The multiplication of matrix not possible \n");
    else
    {
        printf("Enter elements of B matrix\n");
        for (i = 0; i < p; i++)
        for (j = 0; j < q; j++)
        scanf("%d", &B[i][j]);
        for (i = 0; i < m; i++) 
        {
            for (j = 0; j < q; j++) 
            {
                for (k = 0; k < p; k++) 
                {
                    sum = sum + A[i][k]*B[k][j];
                }
                C[i][j] = sum;
                sum = 0;
            }
        }

We now proceed further for the fancied output, where the third array carries out the result of the multiplication.

 printf("Product of the matrices:\n");
        for (i = 0; i < m; i++) 
        {
            for (j = 0; j < q; j++)
            printf("%d\t", C[i][j]);
            printf("\n");
        }

We have now attained the desired output.

C Program to search a number in an array

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This post helps to search a number in an array using the C programming language.

C Program to search a number in an array

Run Code Snippet
#include<stdio.h>
#define MAX_SIZE 100
int main()
{
    int arr[MAX_SIZE];
    int size,i,search,found;
    printf("\n Enter Size of an array:");
    scanf("%d",&size);
    printf("\n Enter elements in an array:");
    for(i=0;i<size;i++)
    scanf("%d",&arr[i]);
    printf("\n Enter element to search:\n");
    scanf("%d",&search);
    found=0;
    for(i=0;i<size;i++)
    {
        if(arr[i]==search)
        {
            found=1;
            break;
        }
    }
    if(found==1)
        printf("\n position found %d",search,i+1);
    else
        printf("\n position not found %d",search);
return 0;
}

Output

Explanation

In this program we enter the size of an array, enter an element in the array, and enter an element to search in the array. Here the variables used are arr[MAX_SIZE], size, i, search, found. 

	int arr[MAX_SIZE];
    int size,i,search,found;
    printf("\n Enter Size of an array:");
    scanf("%d",&size);
    printf("\n Enter elements in an array:");
    for(i=0;i<size;i++)
    scanf("%d",&arr[i]);
    printf("\n Enter element to search:\n");
    scanf("%d",&search);

Here we use the for loop and if loop conditions to verify whether the given condition is satisfied.

found=0;
    for(i=0;i<size;i++)
    {
        if(arr[i]==search)
        {
            found=1;
            break;
        }
    }

Now we use the if condition to print whether the searched element is found or not.

if(found==1)
        printf("\n position found %d",search,i+1);
    else
        printf("\n position not found %d",search);

The desired output is received.

C Program to Calculate Standard Deviation

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This post helps calculate the standard deviation using the C programming language.

C Program to Calculate Standard Deviation

Run Code Snippet
#include<stdio.h>
#include<math.h>
float CSD(float data[])
{
    float sum=0.0, mean, SD=0.0;
    int i;
    for(i=0;i<5;i++)
    {
        sum+=data[i];
        mean=sum/5;
    }
    for(i=0;i<5;i++)
    SD+=pow(data[i]-mean,2);
    return sqrt(SD/5);
}
int main()
{
    int i;
    float data[5];
    printf("Enter 5 elements: \n");
    for(i=0;i<5;i++)
    scanf("%f",&data[i]);
    printf("Standard Deviation=%.3f", CSD(data));
    return 0;
}

Output

Explanation

In this C program, we deal with standard deviation, where it is a measure of how to spread out numbers are. Its symbol is sigma. The formula is the square root of the Variance.

We first start with the function where the calculations are done. The function is named as CSD (Calculate Standard Deviation), the data types used are float and integer. Here the calculation is executed using variables sum, mean, and SD (Standard Deviation).

float CSD(float data[])
{
    float sum=0.0, mean, SD=0.0;
    int i;
    for(i=0;i<5;i++)
    {
        sum+=data[i];
        mean=sum/5;
    }
    for(i=0;i<5;i++)
    SD+=pow(data[i]-mean,2);
    return sqrt(SD/5);
}

Now we pass on to the main function where the user is allowed to assign values for the variables i and data. The For loop checks the given condition to proceed further for the desired output. Here we have stated “%.3f” which indicates the decimal place after three points.

int main()
{
    int i;
    float data[5];
    printf("Enter 5 elements: \n");
    for(i=0;i<5;i++)
    scanf("%f",&data[i]);
    printf("Standard Deviation=%.3f", CSD(data));
    return 0;
}

Now we have received the coveted output.

C Program to delete an element from an array

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This post explains the deletion of an element from an array using the C programming language.

C Program to delete an element from an array

Run Code Snippet
#include <stdio.h>
#define MAX_SIZE 100

int main()
{
    int arr[MAX_SIZE];
    int i, size, pos;

    //Input size and element in array
    printf("Enter size of the array : ");
    scanf("%d", &size);
    printf("\n Enter elements in array : ");
    for(i=0; i<size; i++)
    {
        scanf("%d", &arr[i]);
    }

    //Input element position to delete
    printf("\n Enter the element position to delete : ");
    scanf("%d", &pos);


    //Invalid delete position
    if(pos < 0 || pos > size)
    {
        printf("Invalid position!enter position between 1 to %d", size);
    }
    else
    {
        for(i=pos-1; i<size-1; i++)
        {
            arr[i] = arr[i + 1];
        }
            size--;

        //Print array after deletion
        printf("\nElements of array after delete are : ");
        for(i=0; i<size; i++)
        {
            printf("%d\t", arr[i]);
        }
    }
    return 0;
}

Output

Explanation

This program helps to understand the deletion of an element from an array. We initialize variables where we can store values assigned by the users. Here MAX_SIZE, i, size, pos are the variables to stored the values.

 We now get the size of the array from the user and store it in the variable named size. Then the user enters the elements in an array and also enters the position of an array to be deleted, the value of the position is stored in the variable pos. 

	int arr[MAX_SIZE];
    int i, size, pos;

    //Input size and element in array
    printf("Enter size of the array : ");
    scanf("%d", &size);
    printf("\n Enter elements in array : ");
    for(i=0; i<size; i++)
    {
        scanf("%d", &arr[i]);
    }

    //Input element position to delete
    printf("\n Enter the element position to delete : ");
    scanf("%d", &pos);

Now check the position of the variables with the use of the IF condition, whether the position satisfies the condition, if yes then allow the user to enter a position in an integer type, if no then use the for loop condition to proceed further.

	//Invalid delete position
    if(pos < 0 || pos > size)
    {
        printf("Invalid position!enter position between 1 to %d", 					size);
    }
    else
    {
        for(i=pos-1; i<size-1; i++)
        {
            arr[i] = arr[i + 1];
        }
            size--;

Subsequently we now proceed for displaying the elements deleted in an array.

		//Print array after deletion
        printf("\nElements of array after delete are : ");
        for(i=0; i<size; i++)
        {
            printf("%d\t", arr[i]);
        }

We now get the fancied output.

C Program to Find Largest Element in an Array

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This post helps to find largest element in an array using the C programming language.

C Program to Find Largest Element in an Array

Run Code Snippet
#include <stdio.h>
int main() 
{
   int array[10] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 0};
   int loop, largest;
   largest = array[0];
   for(loop = 1; loop < 10; loop++) 
   {
      if( largest < array[loop] ) 
         largest = array[loop];
   }
   printf("Largest element of array is %d", largest);   
   return 0;
}

Output

Explanation

In this program, we find the largest array by initializing array values and variables like loop and largest. The array values will be stored in the variable namely largest.

	int array[10] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 0};
   	int loop, largest;
   	largest = array[0];

Here we use the for loop condition and if condition. For loop condition is used for verifying whether the given condition is satisfying or not and If condition is used as a method to check the calculation of For loop condition.

	for(loop = 1; loop < 10; loop++) 
   {
      if( largest < array[loop] ) 
         largest = array[loop];
   }
   printf("Largest element of array is %d", largest);   
   return 0;

After the following checking and calculation part is completed. We now proceed to the output.

C Program to find the size of the array

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This post helps to find the size of the array using the C programming language.

C Program to find the size of the array

Run Code Snippet
#include <stdio.h>
int main() 
{
    int array[5]= { 1, 2, 3, 4, 5 };   
	int size;
	size = sizeof(array)/sizeof(int);
    //Print size of Array
    printf("The Size of Array is %d", size); 
	return 0;
}

Output

Explanation

In this program we get to find the size of the array by assigning the value for array and using a variable.

We calculate the size of the array with the use of sizeof function.

	int array[5]= { 1, 2, 3, 4, 5 };   
	int size;
	size = sizeof(array)/sizeof(int);

Now we progress to displaying the desired result.

	//Print size of Array
    printf("The Size of Array is %d", size);

We now get the fancied output.

C Program to insert an element into an array

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This post helps to insert an element into an array using the C programming language.

C Program to insert an element into an array

Run Code Snippet
#include <stdio.h> 
  
int main() 
{ 
    int arr[100] = { 0 }; 
    int i, x, pos, n = 10; 
    for (i = 0; i < 10; i++) 
        arr[i] = i + 1;  
    for (i = 0; i < n; i++) 
        printf("%d ", arr[i]); 
    printf("\n");  
    x = 50; 
    pos = 5;  
    n++; 
  
    // shift elements forward 
    for (i = n; i >= pos; i--) 
        arr[i] = arr[i - 1];
        arr[pos - 1] = x; 
  
    // print the updated array 
    for (i = 0; i < n; i++) 
        printf("%d ", arr[i]); 
    printf("\n"); 
  
    return 0; 
}

Output

Explanation

In this C program, we learn to insert an element in an array. So we first start with initializing variables to store the values of the inserted element in the following array. First, get the element to be inserted, say x. Then get the position at which this element is to be inserted, say pos. 

	int arr[100] = { 0 }; 
    int i, x, pos, n = 10; 
    for (i = 0; i < 10; i++) 
        arr[i] = i + 1;  
    for (i = 0; i < n; i++) 
        printf("%d ", arr[i]); 
    printf("\n");  
    x = 50; 
    pos = 5;  
    n++;

Then shift the array elements from this position to one position forward, and do this for all the other elements next to pos. Insert the element x now at the position pos, as this is now empty.

	// shift elements forward 
    for (i = n; i >= pos; i--) 
        arr[i] = arr[i - 1];
        arr[pos - 1] = x;

Now we advance considerably to print the inserted element in an array.

 	// print the updated array 
    for (i = 0; i < n; i++) 
        printf("%d ", arr[i]); 
    printf("\n");

We have now provided the fancied output.

C program to Reverse a String Using Recursion

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This post helps to reverse a string using recursion by the use of C programming language.

C program to Reverse a String Using Recursion

Run Code Snippet
#include <stdio.h>
#include <string.h>
void reverse(char[],int,int);
int main()
{
    char str1[20];
    int size;
    printf("Enter a string to reverse: ");
    scanf("%s",str1);
    size=strlen(str1);
    reverse(str1,0,size-1);
    printf("The string after reversing is: %s", str1);
    return 0;
}
//function is called to reverse the string
void reverse(char str1[], int index, int size)
{
    char temp;
    temp=str1[index];
    str1[index]=str1[size-index];
    str1[size-index]=temp;
    if (index==size/2)
    {
        return;
    }
    reverse(str1,index+1,size);
}

Output

Explanation

In this program, we start by initializing the functions and the variables. The variable str1 with the value of size is initialized to store the string values. Now we get the string character from the user and check the size and length(strlen) of the str1, and then print the result.

void reverse(char[],int,int);
int main()
{
    char str1[20];
    int size;
    printf("Enter a string to reverse: ");
    scanf("%s",str1);
    size=strlen(str1);
    reverse(str1,0,size-1);
    printf("The string after reversing is: %s", str1);
    return 0;
}

Now the function is called for reversing the string character. Here we initialize a variable named temp to check whether the index and the size are equal and divided by 2. It now returns the values of the string. 

//function is called to reverse the string
void reverse(char str1[], int index, int size)
{
    char temp;
    temp=str1[index];
    str1[index]=str1[size-index];
    str1[size-index]=temp;
    if (index==size/2)
    {
        return;
    }
    reverse(str1,index+1,size);
}

The program now returns the string values as reversed.