Reverse a String In-Place

Code

#include <stdio.h>

void reverse_string(char *str) {
    // Your logic here

char *ptr = str;
char temp = 0;

int count = 0;

while(*ptr!='\0')
{    
    count++;
    ptr++;
}

ptr--;

for(int i=0; i<(count)/2; i++)
{
    temp = *str;
    *str = *ptr;
    *ptr = temp;
    str++;
    ptr--;
}


}



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