Write a C program to convert octal to binary using a while loop. In this c example, the first while loop converts octal to decimal, and the second while loop converts a decimal to binary.
#include <stdio.h> #include <math.h> int main() { int i, octal, decimal = 0; long binary = 0; i = 0; printf("Enter the Octal Number = "); scanf("%d",&octal); while(octal != 0) { decimal = decimal + (octal % 10) * pow(8, i); i++; octal = octal / 10; } i = 1; while(decimal != 0) { binary += ((decimal % 2) * i); decimal = decimal / 2; i = i * 10; } printf("The Binay Value = %ld\n", binary); }

In this c program, the octalToBinary function accepts the octal number and converts it to binary using the for loop.
#include <stdio.h> #include <math.h> long octalToBinary(int octal) { int i, decimal = 0; long binary = 0; for (i = 0; octal != 0; i++) { decimal = decimal + (octal % 10) * pow(8, i); octal = octal / 10; } for (i = 1; decimal != 0; i = i * 10) { binary = binary + (decimal % 2) * i; decimal = decimal / 2; } return binary; } int main() { int octal; printf("Enter the Number = "); scanf("%d", &octal); printf("Result = %ld\n", octalToBinary(octal)); }
Enter the Number = 98
Result = 1010000
Enter the Number = 243
Result = 10100011