Convert decimal to binary in C

Question

I am trying to convert a decimal to binary such as 192 to 11000000. I just need some simple code to do this but the code I have so far doesn\'t work:

void de         


        

Answer 1

First of all 192cannot be represented in 4 bits

192 = 1100 0000 which required minimum 8 bits.

Here is a simple C program to convert Decimal number system to Binary number system

#include   
#include   

int main()  
{  
    long decimal, tempDecimal;  
    char binary[65];  
    int index = 0;  

    /* 
     * Reads decimal number from user 
     */  
    printf("Enter any decimal value : ");  
    scanf("%ld", &decimal);  

    /* Copies decimal value to temp variable */  
    tempDecimal = decimal;  

    while(tempDecimal!=0)  
    {  
        /* Finds decimal%2 and adds to the binary value */  
        binary[index] = (tempDecimal % 2) + '0';  

        tempDecimal /= 2;  
        index++;  
    }  
    binary[index] = '\0';  

    /* Reverse the binary value found */  
    strrev(binary);  

    printf("\nDecimal value = %ld\n", decimal);  
    printf("Binary value of decimal = %s", binary);  

    return 0;  
}