File not passing to function.

[bond5611]

This is my code in which i am getting some errors and my file is not passing to function.

#include<iostream>
#include<cmath>
#include<fstream>
#include<iomanip>
int cal(int& a);
void filling(ifstream &myFile);
using namespace std;
int main()
{
    int a;
    ifstream myFile;
    myFile.open("in.txt");
    filling(myFile);

    
    system("pause");
    return 0;
}
    
int cal(int& a)
{
      a++;
      return a;      

}
void filling(ifstream &myFile)
{
     int a;
     myFile>>a;
     cal(a);
     cout<<a;
     }

[Peter87]

You have to write std::ifstream if you use ifstream before using namespace std;

[bond5611]

Yeah Its now working thanks man.