C语言实现从文件读入一个3*3数组,并计算每行的平均值

1    3    62    9    73    6    4

#include<stdio.h>void main(){ FILE *fr; int i, j, a[3][3]; float avg; fr = fopen("array.dat", "r"); while(!feof(fr)) { printf("Command successfully executed./n"); for(i=0; i<3; i++)  for(j=0; j<3; j++)  fscanf(fr, "%d", &a[i][j]); } printf("读入的数组是：/n"); for(i=0; i<3; i++) for(j=0; j<3; j++){  printf("%d/t", a[i][j]);  if(j == 2)  printf("/n"); } printf("/n数组各行的平均值是：/n"); for(i=0; i<3; i++){ printf("第%d行的平均值是：", i+1); avg = (a[i][0] + a[i][1] + a[i][2]) / 3; printf("%.2f/n", avg); }}