Reversing using Inbulit func

#include <stdio.h>
#include <string.h>
// initialization same as arrays
// strrev(name_of_string)
int main(){
    char str[] = "123456";          //[] shows the length of input string
    printf("The before string was =%s\n",str);
    printf("The after string is =%s\n",strrev(str));

    char str2[] = "coding is fun";          //[] shows the length of input string
    printf("The before string was =%s\n",str2);
    printf("The after string is =%s\n",strrev(str2));
    return 0;
}

//Programmer: TEJAS
Output