c语言编写，1. 打印100以内的质数2. 使用while循环在/project目录下通过随机小写10个字母加固定字符串project批量创建10个html文件。例如:coaolvajcq_project.html3. 将以上文件名中的project全部改成task (用for循环实现),并且html改成大写HTML4. bash for循环打印下面这句话中字母数不大于6的单词real estate price increases in shanghai retreated by nearly 7% last year

1. 打印100以内的质数

#include <stdio.h>

int main() {
    int i, j, flag;
    for (i = 2; i <= 100; i++) {
        flag = 1;
        for (j = 2; j <= i / 2; j++) {
            if (i % j == 0) {
                flag = 0;
                break;
            }
        }
        if (flag == 1) {
            printf("%d ", i);
        }
    }
    return 0;
}

2. 使用while循环在/project目录下通过随机小写10个字母加固定字符串project批量创建10个html文件。例如:coaolvajcq_project.html

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

int main() {
    char filename[30];
    int i = 1;
    srand(time(NULL));
    while (i <= 10) {
        sprintf(filename, "/project/%c%c%c%c%c%c%c%c%c%c_project.html", rand() % 26 + 'a', rand() % 26 + 'a',
                rand() % 26 + 'a', rand() % 26 + 'a', rand() % 26 + 'a', rand() % 26 + 'a', rand() % 26 + 'a',
                rand() % 26 + 'a', rand() % 26 + 'a', rand() % 26 + 'a');
        FILE *fp = fopen(filename, "w");
        if (fp != NULL) {
            fclose(fp);
            i++;
        }
    }
    return 0;
}

3. 将以上文件名中的project全部改成task (用for循环实现)，并且html改成大写HTML

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

int main() {
    char filename[30];
    int i = 1;
    srand(time(NULL));
    while (i <= 10) {
        sprintf(filename, "/project/%c%c%c%c%c%c%c%c%c%c_project.html", rand() % 26 + 'a', rand() % 26 + 'a',
                rand() % 26 + 'a', rand() % 26 + 'a', rand() % 26 + 'a', rand() % 26 + 'a', rand() % 26 + 'a',
                rand() % 26 + 'a', rand() % 26 + 'a', rand() % 26 + 'a');
        FILE *fp = fopen(filename, "w");
        if (fp != NULL) {
            fclose(fp);
            i++;
        }
    }
    for (i = 1; i <= 10; i++) {
        sprintf(filename, "/project/%c%c%c%c%c%c%c%c%c%c_project.html", rand() % 26 + 'a', rand() % 26 + 'a',
                rand() % 26 + 'a', rand() % 26 + 'a', rand() % 26 + 'a', rand() % 26 + 'a', rand() % 26 + 'a',
                rand() % 26 + 'a', rand() % 26 + 'a', rand() % 26 + 'a');
        char *pos = strstr(filename, "_project.html");
        if (pos != NULL) {
            memcpy(pos, "_task.HTML", 10);
        }
        rename(filename, "/project/newname");
    }
    return 0;
}

4. bash for循环打印下面这句话中字母数不大于6的单词real estate price increases in shanghai retreated by nearly 7% last year

for word in real estate price in by 7% last; do echo $word; done