How to reverse a string in C?

#include <stdio.h>
#include <string.h>

int main(void) {
    char s[] = "Hello";
    int i = 0, j = strlen(s) - 1;

    while (i < j) {
        char t = s[i];
        s[i] = s[j];
        s[j] = t;
        i++;
        j--;
    }
    printf("%s\n", s);
    return 0;
}

Output:

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