Reverse a String In-Place

Code

#include <stdio.h>

void reverse_string(char *str) {
    // Your logic here
    int i,j;
     for(i=0;str[i];i++);
    
     for(j=0,i=i-1;j<i;i--,j++)
     {
        char t;
        t=str[i];
        str[i]=str[j];
        str[j]=t;
     }
}

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