若有下面定义,能打印出字母'L'的语句是（ ）。 struct class { char name[8]; int age; }; struct class s[12]={"Zheng",16,"Lin",18,"Yang",19,"Guo",20};
对下面程序描述正确的是（ ）。 #include <stdio.h> #include <stdlib.h> void main() {FILE *in,*out; if((in=fopen("file1.txt","a+"))==NULL) {printf("cannot open file1\n"); exit(0); } if((out=fopen("file2.txt","a+"))==NULL) {printf("cannot open file2\n"); exit(0); } while(!feof(out)) fputc(fgetc(out),in); fclose(in); fclose(out); }
