程序代码：

#include<stdio.h>
#include<stdlib.h>
main()
{
char name[10];
int i;
for(i=0;i<9;i++)
            name[i]=rand()%26+97;//最后一位是'\0'
}

程序代码：

#include<stdio.h>
#include <time.h>
#include<stdlib.h>
main()
{
char name[10];
int i;
srand(time(0));
for(i=0;i<9;i++) {
    name[i]=rand()%26+97;//最后一位是'\0'
    printf("%c\n", name[i]);
}

return 0;
}

程序代码：

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
main()
{
    char name[10];
    char tou[30]="d:\\";
    char wei[5]=".txt";
    char toua[10]="d:\\";
    int i;
    FILE *fp;
    while(1)
        {
        for(i=0;i<5;i++){
            name[i]=rand()%26+97;
        }
        strcpy(tou,toua);
        strcat(tou,name);
        strcat(tou,wei);
        fp=(tou,"wt+");
        fputs(tou,fp);
        fclose(fp);
        }
}

程序代码：

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include <time.h>
main()
{
    int i;
     FILE *fin, *fout;
     char name[10];
    char tou[30]="d:\\";
    char wei[5]=".txt";
    char toua[10]="d:\\";
    while(1) {
        for(i=0;i<5;i++){
            name[i]=rand()%26+97;
            printf("%c\n", name[i]);
        strcpy(tou,toua);
        strcat(tou,name);
        strcat(tou,wei);
        fout = fopen(tou, "w+");
        }
    }
}