主要语句如下:FILE *fin;int arr1[3],arr2[3];int i=3;if ( (fin = fopen("a.in","r") ) == NULL ) { printf("\007Cann't open input file a.in "); exit(0); };for (i=0;i<3;i++)fscanf(fin,"%d %d", &arr1[i], &arr2[i]);fclose(fin);