#include
int main()
{
FILE *fp1, *fp2, *fp3;
char name[100];
int v;
printf("please input file1:");
scanf("%s",name);
fp1 = fopen(name, "r");
while((v = fgetc(fp1)) !=EOF) putchar(v);
printf("please input file2:");
scanf("%s",name);
fp2 = fopen(name, "r");
while((v = fgetc(fp2)) !=EOF) putchar(v);
printf("please input file3:");
scanf("%s",name);
fp3 = fopen(name, "r");
while((v = fgetc(fp3)) !=EOF) putchar(v);
fcloseall();
return 0;
}