43 lines
931 B
C
43 lines
931 B
C
// 随机生成10位学生的成绩并写入到score.txt文件中
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// 【要求】随机生成学号和成绩，每一行存储一位学生的成绩，学号与成绩之间用 ","逗号分隔。
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// 【提示】成绩范围[0, 100]
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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typedef struct stu_s
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{
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int sid;
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char dh; // 逗号
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float score;
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struct stu_s *next;
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} STU;
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int main()
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{
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FILE *fp = fopen("score.txt", "w");
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srand(time(NULL));
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// float scorex = rand() % 101;
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for (int i = 0; i < 10; i++)
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{
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if (NULL == fp)
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{
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perror("fopen");
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return 1;
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}
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STU *stu = malloc(sizeof(STU));
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stu->sid = i + 1;
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stu->dh = ','; // 间隔的逗号
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stu->score = rand() % 101;
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fwrite(stu, sizeof(STU), 1, fp);
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// fputc('\n', fp); // 添加换行
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free(stu);
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}
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fclose(fp);
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return 0;
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} |