C++ Program to Reverse Each Word in a String

This is a C++ Program to Reverse a String.

Problem Description

The program takes a string and reverses it.

Problem Solution

1. The program takes a string.
2. Using a for loop and string function, the string is reversed.
3. The result is printed.
4. Exit.

C++ Program/Source code

Here is the source code of C++ Program to Reverse a String. The program output is shown below.

```
#include<iostream>
```
```
#include<string.h>
```
```
using namespace std;
```
```
int main ()
```
```
{
```
```
    char str[50], temp;
```
```
    int i, j;
```
```
    cout << "Enter a string : ";
```
```
    gets(str);
```
```
    j = strlen(str) - 1;
```
```
    for (i = 0; i < j; i++,j--)
```
```
    {
```
```
        temp = str[i];
```
```
        str[i] = str[j];
```
```
        str[j] = temp;
```
```
    }
```

    cout << "\nReverse string : " << str;

```
    return 0;
```
```
}
```

Program Explanation

1. The user is asked to enter a string and it is stored in the character variable ‘str’.
2. The length of ‘str’ is stored in the variable ‘j’ and ‘i’ is initialized as 0.
3. Using a for loop, the string is reversed.
4. The ith character of str is swapped with jth character using a temporary variable ‘temp’.
5. The loop terminates when i is less than j.
6. str is then printed which is th result.

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Runtime Test Cases

Case 1 :
Enter a string : MALAYALAM
Reverse string : MALAYALAM
 
Case 2 :
Enter a string : gubed
Reverse string : debug
 
Case 3 :
Enter a string : CruisE
Reverse string : EsiurC

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