08/11/11 01:46:23
>>550
#include <stdio.h>
int main(void)
{
int i, score, sum=0;
FILE *fp;
for(i=1; i<=5; i++){
printf("%d人目：", i);
scanf("%d", &score);
sum += score;
}
printf("平均値：%f\n", (double)sum / 5.0);
if((fp = fopen("ave.txt", "w")) == NULL){
printf("ファイルが開けません\n");
return 1;
}
fprintf(fp, "平均値：%f\n", (double)sum / 5.0);
fclose(fp);
return 0;
}