重复字符串-挑战-答案缺少几位数字(C语言)

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

// 函数：重复字符串
char* repeatString(const char* str, int count) {
    int len = strlen(str);
    char* result = (char*)malloc(len * count + 1); // 申请足够的内存空间
    int i, j;

    for (i = 0; i < count; i++) {
        for (j = 0; j < len; j++) {
            result[i * len + j] = str[j]; // 将原始字符串复制到结果字符串
        }
    }

    result[len * count] = '\0'; // 结果字符串末尾添加结束符

    return result;
}

int main() {
    const char* str = "ABC";
    int count = 3;

    char* repeatedStr = repeatString(str, count);
    printf("Repeated String: %s\n", repeatedStr);

    free(repeatedStr); // 释放申请的内存空间

    return 0;
}