Reverse a String In-Place

Code

#include <stdio.h>
#include <stdint.h>

void reverse_string(char *s) {
    // Your logic here
   char *t = s;
   while(*t) t++;
   --t;
   while(s<t){
    char c = *s;
    *s++=*t;
    *t--=c;
   }
}


int main() {
    char str[101];
    fgets(str, sizeof(str), stdin);

    // Remove newline
    int i = 0;
    while (str[i] != '\0') {
        if (str[i] == '\n') {
            str[i] = '\0';
            break;
        }
        i++;
    }

    reverse_string(str);
    printf("%s", str);
    return 0;
}

Solving Approach

 

 

 

Upvote
Downvote
Loading...

Input

firmware

Expected Output

erawmrif