文件基本读写 ■例:统计文件的行数 main i FILE fp; int n=0; chat c if ((fp=fopen("d: Itclladat",I))==NULL) i printf("cannot open file adat! ) exit(0);) while(! feof(fp))i c=fgetc(fpa) if(c==^n3)n++; printf(%odn,n) if (fclose(fpa) i printf("cannot close file a dat! );exit(O);)文件基本读写 例：统计文件的行数 main( ) { FILE *fp ; int n=0; chat c; if ((fp=fopen("d:\\tc\\a.dat", "r"))= =NULL) { printf("cannot open file a.dat!"); exit(0); } while ( ! feof(fp)) { c = fgetc(fpa); if (c = = ‘\n’) n++ ; } printf(“%d\n”, n); if (fclose(fpa)) { printf("cannot close file a.dat!"); exit(0); } }