C Program to Convert a Number Decimal System to Binary System using Recursion

#include < stdio.h>
 
int convert(int);
 
int main()
{
    int dec, bin;
 
    printf("Enter a decimal number: ");
    scanf("%d", &dec);
    bin = convert(dec);
    printf("The binary equivalent of %d is %d.\n", dec, bin);
 
    return 0;
}
 
int convert(int dec)
{
    if (dec == 0)
    {
        return 0;
    }
    else
    {
        return (dec % 2 + 10 * convert(dec / 2));
    }
}

Output

 Enter a decimal number:  10 
The binary equivalent of  10  is  1010 .

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