Reverse a char array

Input Format:

Input consists of a string. 

Assume that the maximum length of the string is 50.

Output format:

Refer sample input and output for formatting specifications.

Sample input &output

Excellent

tnellecxE

SOLUTION:

#include <iostream>

using namespace std;

int main(){

char str[100], rev[100];

  cin.getline(str,100);

  int i, j = 0;

  while(str[j] != '\0'){

  j++;

  }

  j--;

  char temp;

  for(i = 0; i <= j; i++,j--){

    temp = str[i];

    str[i] = str[j];

    str[j] = temp;

  }

  cout<<str;

}