**Example:**

Input any number: 22

Output binary number: 00000000000000000000000000010110 (in 4 byte integer representation)

### Required knowledge:

Basic C programming, Bitwise operator, Loop, Array### Program:

/** * C program to convert decimal to binary number system using bitwise operator */ #include <stdio.h> #define INT_SIZE sizeof(int) * 8 //Size of int in bits int main() { int num, index, i; int bin[INT_SIZE]; printf("Enter any number: "); scanf("%d", &num); index = INT_SIZE; //Converts decimal to binary while(index!=0) { index--; //Store 1 if LSB is set otherwise 0 bin[index] = num & 1; //Shift bits of num to one position right num >>= 1; } //Prints the converted binary printf("Converted binary (in %d byte integer representation): ", sizeof(int)); for(i=0; i<INT_SIZE; i++) { printf("%d", bin[i]); } return 0; }

Output

Enter any number: 22

Converted binary (in 4 byte integer representation): 00000000000000000000000000010110

Converted binary (in 4 byte integer representation): 00000000000000000000000000010110

Happy coding ;)

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