fork download

int main() {
    char i;
    int fl=0,ff=0,fq=0;
    cin >> i;
    while(i!= '\n' && i!=EOF){
        cout << i << endl;
        if(i=='f') {
            cin >> i;
            switch (i) {
                case('l'):
                    ++fl;
                    break;
                case('f'):
                    ++ff;
                    break;
                case('q'):
                    ++fq;
                    break;
 
            }
        } else
            cin >> i;
    }
    cout << "fl: " << fl << endl;
    cout << "ff: " << ff << endl;
    cout << "fq: " << fq << endl;
 
    return 0;
}

prog.cpp: In function ‘int main()’:
prog.cpp:4:5: error: ‘cin’ was not declared in this scope
     cin >> i;
     ^~~
prog.cpp:5:26: error: ‘EOF’ was not declared in this scope
     while(i!= '\n' && i!=EOF){
                          ^~~
prog.cpp:6:9: error: ‘cout’ was not declared in this scope
         cout << i << endl;
         ^~~~
prog.cpp:6:22: error: ‘endl’ was not declared in this scope
         cout << i << endl;
                      ^~~~
prog.cpp:24:5: error: ‘cout’ was not declared in this scope
     cout << "fl: " << fl << endl;
     ^~~~
prog.cpp:24:29: error: ‘endl’ was not declared in this scope
     cout << "fl: " << fl << endl;
                             ^~~~

Standard output is empty