c passing parameters via function-CodePudding

I want to write data to a .txt file, collected by a function from main.cpp then passed via MyFunction.h file, and make the record with MyFunction.cpp file.

But I can't find a way to pass strings in float in one function. And even can't pass one string.

I'm just learning C at the moment, so please provide some advice.

main.cpp

MyFunction.h

MyFunction.pcc

CodePudding user response：

I suggest you look at those functions:

std::to_string: convert a numerical value to a string
std::stoi/std::stof: convert a string to a integral/floating point value

CodePudding user response：

First of all to pass data to a file you should understand how works the directive fstrem what should be included like

#include <fstream>
#include <cstdlib> // for exit function

First we should create the output stream and in my case a array, whom will be passed to the file.

    int main()
{
   ofstream outdata; // outdata is like cin
   int i; // loop index
   int num[5] = {4, 3, 6, 7, 12}; // list of output values

outdata.open("example.txt"); // opens the file
   if( !outdata ) { // file couldn't be opened
      cerr << "Error: file could not be opened" << endl;
      exit(1);
   }

for (i=0; i<5;   i)
      outdata << num[i] << endl;
   outdata.close();
 
   return 0;
}