如何在没有内存泄漏的情况下删除C中的前导/尾随空格

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

void removeLeadingTrailingSpaces(char* str) {
    int i, j;
    int n = strlen(str);

    // Remove leading spaces
    i = 0;
    while (str[i] == ' ') {
        i++;
    }

    // Shift characters to the left
    int k = 0;
    for (j = i; j < n; j++) {
        str[k++] = str[j];
    }
    str[k] = '\0';

    // Remove trailing spaces
    n = strlen(str);
    i = n - 1;
    while (str[i] == ' ') {
        str[i] = '\0';
        i--;
    }
}

int main() {
    char str[] = "   Hello, World!   ";
    printf("Before: '%s'\n", str);

    removeLeadingTrailingSpaces(str);
    printf("After: '%s'\n", str);

    return 0;
}

Before: '   Hello, World!   '
After: 'Hello, World!'