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strrev() function in C

 3 years ago
source link: https://www.geeksforgeeks.org/strrev-function-in-c/
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strrev() function in C

  • Difficulty Level : Medium
  • Last Updated : 04 Oct, 2018
The strrev() function is a built-in function in C and is defined in string.h header file. The strrev() function is used to reverse the given string.

Syntax:

char *strrev(char *str);

Parameter:

  • str: The given string which is needed to be reversed.

Returns: This function returns the string after reversing the given string.

Note: This is a non-standard function that works only with older versions of Microsoft C.

Below programs illustrate the strrev() function in C:

Example 1:-

// C program to demonstrate
// example of strrev() function
#include<stdio.h>
#include<string.h>
int main()
{
char str[50] = "geeksforgeeks";
printf("The given string is =%s\n",str);
printf("After reversing string is =%s",strrev(str));
return 0;
}

Output:

The given string is =geeksforgeeks
After reversing string is =skeegrofskeeg

Example 2:-

// C program to demonstrate
// example of strrev() function
#include<stdio.h>
#include<string.h>
int main()
{
char str[50] = "123456789";
printf("The given string is =%s\n",str);
printf("After reversing string is =%s",strrev(str));
return 0;
}

Output:

The given string is = 123456789
After reversing string is = 987654321
Want to learn from the best curated videos and practice problems, check out the C Foundation Course for Basic to Advanced C.

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