Question

I have an error in my program which says that
‘count’ cannot be used as a function.

it points to the below line

mycount = (int) count (t1q1.begin(), t1q1.end(), 1);

i have already included algorithm, using namespace std, but still it shows the error.

This is what I do with my vector t1q1
The below code allows the program to read in the file and extract the certain information and push it back to the vector

MY FUNCTION TO READ FILE AND STORE IT IN VARIABLES

void checkForAnswers(char *ptr)
{
    char String[256];
    int count = 0;

    while ( *ptr != ':')
    {
        String[count] = *ptr;
        ptr++;
        count++;
    }

    String[count] = '\0';

     //if topic is 1.
     if (strcmp(String, "1") == 0)
    {
         currentPtr=Travels(':',startPtr);
         int answerone1 = (int)atoi(currentPtr);
         currentPtr=Travels(':',currentPtr);
         int answertwo2 = (int)atoi(currentPtr);
         currentPtr=Travels(':',currentPtr);
         int answerthree3 = (int)atoi(currentPtr);
         currentPtr=Travels(':',currentPtr);
         int answerfour4 = (int)atoi(currentPtr);
         currentPtr=Travels(':',currentPtr);
         int answerfive5 = (int)atoi(currentPtr);

         t1q1.push_back(answerone1);
         t1q2.push_back(answertwo2);
         t1q3.push_back(answerthree3);
         t1q4.push_back(answerfour4);
         t1q5.push_back(answerfive5);
    }

    if (strcmp(String, "2") == 0)
    {
        currentPtr=Travels(':',startPtr);
        int answerone1 = (int)atoi(currentPtr);
        currentPtr=Travels(':',currentPtr);
        int answertwo2 = (int)atoi(currentPtr);
        currentPtr=Travels(':',currentPtr);
        int answerthree3 = (int)atoi(currentPtr);
        currentPtr=Travels(':',currentPtr);
        int answerfour4 = (int)atoi(currentPtr);
        currentPtr=Travels(':',currentPtr);
        int answerfive5 = (int)atoi(currentPtr);

        t2q1.push_back(answerone1);
        t2q2.push_back(answertwo2);
        t2q3.push_back(answerthree3);
        t2q4.push_back(answerfour4);
        t2q5.push_back(answerfive5);
    }

     if (strcmp(String, "3") == 0)
     {
        currentPtr=Travels(':',startPtr);
        int answerone1 = (int)atoi(currentPtr);
        currentPtr=Travels(':',currentPtr);
        int answertwo2 = (int)atoi(currentPtr);
        currentPtr=Travels(':',currentPtr);
        int answerthree3 = (int)atoi(currentPtr);
        currentPtr=Travels(':',currentPtr);
        int answerfour4 = (int)atoi(currentPtr);
        currentPtr=Travels(':',currentPtr);
        int answerfive5 = (int)atoi(currentPtr);

        t3q1.push_back(answerone1);
        t3q2.push_back(answertwo2);
        t3q3.push_back(answerthree3);
        t3q4.push_back(answerfour4);
        t3q5.push_back(answerfive5);
    }

        currentPtr=0;
} 

MY MAIN

  char Lines1[256];
        int count1 = 0;

        ifstream resultfile("results.txt");
        if (resultfile.is_open())
        {
            do
            {
            resultfile.getline(Lines1, 256);
            startPtr = Lines1;
            checkForAnswers(startPtr);
            count1++;
            }while(resultfile.eof() == false);
        resultfile.close();
        }


    int mycount;
    cout<< "\n";
    cout<< "TABULATION RESULTS\n";
    cout<< "------------------\n";
    cout<< "Topic 1, Question 1\n";
    mycount = (int) count (t1q1.begin(), t1q1.end(), 1);
    cout<< "Option 1: "<< mycount << " time(s)\n";

Hope you guys will be able to help me out.
Thanks in advance to those who helped!
🙂

Answer 1

In your code count refers to the local variable count, which has type int and thus cannot be used as a function. You should name the variable something else or refer to the function using its qualified name std::count.

Also make sure that you #include <algorithm> (and have an appropriate using declaration if you go the route of renaming the variable and calling the function using its unqualified name).