//Written by MA Saleh
#include<stdio.h>
int main()
{
    int binary[30];
    int decimal_no, i = 0, j;

    printf("Enter the Decimal no which u want to convert to Binary: \n");

    while(scanf("%d", &decimal_no) == 1)
    {
        while(decimal_no > 0)
    {
        binary[i] = decimal_no % 2;
        i++;
        decimal_no = decimal_no/2;
    }

    for(j = i-1; j >=0; j--)
    {
        printf("%d", binary[j]);
    }
    printf("\n\n");
    i = 0; j = 0;
    }

    return 0;

    //copyright@MAS
}

Sample Input: 12, 15


Sample Output:



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