>> 519
#include<stdio.h>
int main(){
int point[4][5];
int num[4],sum[4];
double ave[4];
int i,j;
FILE *fp;
fp = fopen("point.txt","r");
for(i=0;i<4;i++){
sum[i] = 0;
ave[i] = 0;
fscanf(fp,"%d %d %d %d %d %d",&num[i],&point[i][0],&point[i][1],&point[i][2]
,&point[i][3],&point[i][4]);
for(j=0;j<5;j++){
sum[i] += point[i][j];
}
ave[i] = sum[i] / 5.0;
printf("%d sum = %d average = %f ",num[i],sum[i],ave[i]);
if(ave[i]>=80.0)
printf("Rank A¥n");
else if(ave[i]>=70.0)
printf("Rank B¥n");
else if(ave[i]>=60.0)
printf("Rank C¥n");
else
printf("Rank D¥n");
}
fclose(fp);
return 0;
}