Octal to Decimal

#include <stdio.h> #include <math.h> long long convertOctalToDecimal(int octalNumber); int main() { int octalNumber; printf("Enter an octal number: "); scanf("%d", &octalNumber); printf("%d in octal = %lld in decimal", octalNumber, convertOctalToDecimal(octalNumber)); return 0; } long long convertOctalToDecimal(int octalNumber) { int decimalNumber = 0, i = 0; while(octalNumber != 0) { decimalNumber += (octalNumber%10) * pow(8,i); ++i; octalNumber/=10; } return decimalNumber; }