visual c++ - C++ Function is not returning a value -

here code, can not figure out why won't work function when exact code in main() produces correct answer. assignment convert binary number decimal.

#include <iostream> #include <cstdlib> #include "std_lib_facilities.h" using namespace std; int binarycon(int binum); int main() {     int num, bin, bnum;     cout << "enter binary number(1s , 0s) : ";     cin >> num;     bin = num;     bnum = binarycon(num);     cout << "the decimal equivalent of " << bin << " : " << bnum << endl; }     int binarycon(int binum) {     long dec = 0, rem = 0, base = 1;     enter code here`while (binum > 0)     rem = binum % 10;     dec = dec + rem * base;     base = base * 2;     binum = binum / 10;      return binum; } 

corrected code:

#include <iostream> #include <cstdlib> using namespace std; int binarycon(int binum); int main() {     int num, bin, bnum;     cout << "enter binary number(1s , 0s) : ";     cin >> num;     bin = num;     bnum = binarycon(num);     cout << "the decimal equivalent of " << bin << " : " << bnum << endl;     getchar();     return 0; } int binarycon(int binum) {     long dec = 0, rem = 0, base = 1;     while (binum > 0){         rem = binum % 10;         dec = dec + rem * base;         base = base * 2;         binum = binum / 10;     }     return dec; }