Reverse a String In-Place

Code

#include <stdio.h>

void reverse_string(char *str) {
    // Your logic here
    char temp;
    int count=0;
    int i;
    int start=0;
    for(int i=0;*(str+i)!='\0';i++)
        count++;
    count--;
    while(count>start){
        temp = *(str+start);
        *(str+start) = *(str+count);
        *(str+count) = temp;
        start++;
        count--;
    }

}

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