# C Program to convert decimal number to binary

Published on January 25, 2017 by Senthil Kumar

Filed under C

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# Problem

Write a program in C to convert a decimal number to binary number

# How to convert a decimal number to binary number in C ?

```#include <stdio.h>
#include <math.h>
long DecimalToBinary(int n);

int main()
{
int input;
printf("Abundantcode.com Coding samples\n");
printf("Enter a decimal number: ");
scanf("%d", &input);
printf("%ld",DecimalToBinary(input));
return 0;
}

long DecimalToBinary(int n)
{
long binaryNumber = 0;
int remainder, i = 1, step = 1;

while (n!=0)
{
remainder = n%2;
n /= 2;
binaryNumber += remainder*i;
i *= 10;
}
return binaryNumber;
}```

# Output

Abundantcode.com Coding samples
Enter a decimal number: 10
1010

﻿
x

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