limiting number of characters to be displayed..

[rey9]

can anyone help me with this...
i want to output only 25 characters(name and course) in this program..but its display all the inputted characters.

here is my code:

#include<iostream>
#include<string>
#include<cstdio>
using namespace std;

int main()
{
    int numStud ;
    double score, numScore, sum = 0;
    double  ave;
    string name, course;
    
    getline(cin,name);
    getline(cin,course);
    cin >> numScore;
    for(int i = 0; i < numScore; i++)
    {
       cin >> score;
       sum = sum + score;
       
    }
    ave = sum / numScore;
    
    printf("NAME\t\t\tCOURSE\t\t\tSCORE\n");
    printf("%s\t\t%s\t\t%.2f\n", name.c_str(), course.c_str(), ave);
    system("pause");
    return 0;
}

this is my input:

Supercalifragelisticexpialidocious Abracadabra
BS Digital Illustration and Animation 
10 9 10 2 4 0 9 8 10 9 7

any help will be highly appreciated...thank you in advance :)

[jlb]

Since you are using std::string why not use C++ streams and std::string.substr()?

cout << "NAME\t\t\tCOURSE\t\t\tSCORE\n";
cout << name.substr(0,25) << "\t\t" << course.substr(0,25) << endl;
cout << ave << endl;

[rey9]

yeah..I forgot about substr()... anyway, thank you very much jib for the help. I really appreciate your help :)


additional question..

i've come up with this code..

#include<iostream>
#include<string>
#include<cstdlib>
#include<vector>
using namespace std;


int main()
{
    string name = "", course="", x;
    int numStud;
    
    vector <double> s;
    double score, sum = 0, ave, numScore;
    
    cin >> numStud;
    for(int j = 0; j < numStud; j++)
    {
      for(int i = 1; i <= 2; i++)
      {
        getline(cin,x);
        if(i == 1)
          name = x;
        else 
          course = x;   
      
      }
      cin >> numScore;
      for(int t = 0; t < numScore; t++)
      {
         cin >> score;
         s.push_back(score);
         sum = sum + score;
      }
      ave  = sum / numScore;
      printf("NAME\t\t\t\tCOURSE\t\t\t\tSCORE\n");
      printf("%s\t%s\t%.2f\n",(name.substr(0,25)).c_str(), (course.substr(0,25)).c_str(), ave);
    }
    
    
    return 0;
}

i want to loop the input and the output of this program but there is something wrong with this....

here is my input

3
Mickey Mouse
BS Psychology
10 6 2 1 1 0 6 10 10 8 9
Supercalifragelisticexpialidocious Abracadabra
BS Business Administration 
10 9 10 2 4 0 9 8 10 9 7
Jar Jar Binks
BS Information Technology
10 8 9 3 9 1 6 7 8 5 5 5

and this should be the output

NAME                      COURSE                    SCORE
Supercalifragelisticexpia BS Business Administratio  6.80
Jar Jar Binks             BS Information Technology  6.10
Mickey Mouse              BS Psychology              5.30

[jlb]

Why are you mixing C-stdio output functions and C++ streams? You should pick one or the other. For C++ programs you should be using C++ streams, not the C-stdio functions for most occasions.

What output are you getting?