Function prototype in C++ : Function Prototype « Function « C++

1. C++
2. Function
3. Function Prototype

Function prototype in C++

 


#include <iostream>
#include <cstring>
using namespace std;

void reverse(char *str, int count = 0);

int main()
{
  char *s1 = "This is a test.";
  char *s2 = "I like C++.";

  reverse(s1); // reverse entire string
  reverse(s2, 7);  // reverse 1st 7 chars

  cout << s1 << '\n';
  cout << s2 << '\n';

  return 0;
}

void reverse(char *str, int count)
{
  int i, j;
  char temp;
  
  if(!count) count = strlen(str)-1;

  for(i = 0, j=count; i <j; i++, j--) {
    temp = str[ i ];
    str[ i ] = str[j];
    str[j] = temp;
  }
}

           
         
  

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