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C program to convert Decimal to Binary number system



C program to convert Decimal to Binary number system

Write a C program to input decimal number from user and convert to binary number system. How to convert from decimal number to binary number system in C program. 

Decimal number system
Decimal number system is a base 10 number system. Decimal number system uses only 10 symbols to represent all number i.e. 0123456789

Binary number system
Binary number system is a base 2 number system. Binary number system uses only 2 symbols to represent all numbers i.e. 0 and 1

Algorithm to convert from decimal to binary

Algorithm Decimal to Binary conversion
begin:
read (decimal);
binary = 0; place = 1; rem = 0;
while (decimal > 0) do 
begin 
    rem = decimal % 2;
    binary = (rem * place) + binary;
    place = place * 10;
    decimal = decimal / 2;
end
write('Binary = ' binary)
end

#include <stdio.h>

int main()
{
    long long decimal, tempDecimal, binary;
    int rem, place = 1;

    binary = 0;

    /* Input decimal number from user */
    printf("Enter any decimal number: ");
    scanf("%lld", &decimal);
    tempDecimal = decimal;

    /* Decimal to binary conversion */
    while(tempDecimal > 0)
    {
        rem = tempDecimal % 2;

        binary = (rem * place) + binary;

        tempDecimal /= 2;

        place *= 10;
    }

    printf("Decimal number = %lld\n", decimal);
    printf("Binary number = %lld", binary);

    return 0;
}