Expressions with reference type exemplified by string assignments. : Function Parameters « Function « C++

1. C++
2. Function
3. Function Parameters

Expressions with reference type exemplified by string assignments.

#include <iostream>
#include <string>
#include <cctype>                
using namespace std;
void strToUpper( string& );      
int main(){
   string text("Test with assignments \n");
   strToUpper(text);
   cout << text << endl;
   strToUpper( text = "lower case");
   cout << text << endl;
   strToUpper( text += " and lower case!\n");
   cout << text << endl;
   return 0;
}
void strToUpper( string& str){                              
    int len = str.length();
    for( int i=0; i < len; ++i)
      str[i] = toupper( str[i]);
}

           
       

Related examples in the same category

1.	Function parameters
2.	Function: reference version and pointer version
3.	Passing Arguments by Value
4.	Function uses two arguments
5.	Passing Arguments by Reference
6.	Passes the variable to be doubled by reference
7.	Passed by value and passed by reference
8.	Pass string (char *) into a function
9.	Demonstrates the use of return values with reference type.