Adding a random number 1-100

[cody728]

Hi so I'm working on inputting a text file then outputting a another file that has a random number 1-100
here is how my input file would look like:
Student1 B-tree
Student10 Homework
Student10 Sorting
Student12 Homework
Student20 Homework
Student4 Quiz
Student4 Sorting
Student7 Quiz
Student1 Homework
Student11 Quiz
Student12 Sorting
Student14 Quiz
Student17 Binary
Student17 Quiz
Code:

void search(string category, string type){
  ifstream in( "dailylog.txt" );
  ofstream output("search.txt");
  vector<PR> v;
  int day;
  day = rand()%100+1;
  srand(time(0));
  if(category == "name"||category=="Name"){
  for ( string name, words; in >> name >> words; ) v.push_back( { name, words } );
  //std::sort( v.begin(),v.end() ,    []( PR a, PR b ) { return a.first  < b.first;  }      );
  for( PR pr : v )
  //if(category == "studentName"){
    if(pr.first == type){
      srand(time(0));

      output<<pr.first<<" "<<pr.second<<" Day visited: "<<day<<endl;
      }
    }
else if(category == "topic"||category=="Topic"){
  for ( string name, words; in >> name >> words; ) v.push_back( { name, words } );
  // std::sort( v.begin(),v.end() ,    []( PR a, PR b ) { return a.second > b.second; } );
  for( PR pr : v )
  if(pr.second == type){
    srand(time(0));

    output<<pr.first<<" "<<pr.second<<" Day visited: "<<day<<endl;
  }
  }
}

Here is my output file example:
Student4 Quiz Day visited: 24
Student7 Quiz Day visited: 24
Student11 Quiz Day visited: 24
Student14 Quiz Day visited: 24
Student17 Quiz Day visited: 24
Student6 Quiz Day visited: 24
Student16 Quiz Day visited: 24
Student8 Quiz Day visited: 24
Student8 Quiz Day visited: 24
Student12 Quiz Day visited: 24
Student5 Quiz Day visited: 24
Student6 Quiz Day visited: 24

How can i Make it random cause not every number should be 24 i just want it to be random from 1-100?
This code is also a search function so it prints everything based on what the user would want so an example of how to call it: srt.search("topic","Quiz");
it would print out every student who would ask about a quiz. And I'm trying to add a number that shows the day they visited.

[salem c]

> day = rand()%100+1;
How many times are you calling this in your code?

> srand(time(0));
How many times are you calling this in your code?

In your short-lived program, how many times do you think time(0) is going to return a different answer inside your loops?

day isn't magically recomputed every time you call srand.