Question

提示错误h:\1-10-1.c(24) : warning C4101: 'i' : unreferenced local variable

#include "stdio.h" #include "stdlib.h"#include "string.h"#include "ctype.h" #define M 50 typedef struct { char name[20]; char units[30]; char tele[10]; }ADDRESS;int enter(ADDRESS t[]);void list(ADDRESS t[],int n); void search(ADDRESS t[],int n); int delete(ADDRESS t[],int n); int add(ADDRESS t[],int n);void sort(ADDRESS t[],int n); void qseek(ADDRESS t[],int n); void print(ADDRESS temp); int menu_select(); main(){ int i; ADDRESS adr[M]; int length; system("CLS" ); for(;;) { switch(menu_select()) { case 0:length=enter(adr);break; case 1:list(adr,length);break; case 2:length=delete(adr,length);break; case 3:length=add(adr,length); break; case 4:sort(adr,length);break; case 5:qseek(adr,length);break; case 6:exit(0); } }}menu_select(){ char s[80]; int c; printf("press any key enter menu......\n"); getch(); system("CLS"); printf("********************MENU*********************\n\n"); printf(" 0. Enter record\n"); printf(" 1. List the file\n"); printf(" 2. Delete a record\n"); printf(" 3. add record \n"); printf(" 4. Save the file\n"); printf(" 5. sort to make new file\n"); printf(" 6. Quick seek record\n"); printf(" 7. Quit\n");

Answer 1

这个是警告，错误是你有两个未解释的符号，可能缺少lib或自己定义的函数没有定义

Answer 2

定义的变量i没被使用

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怎么改呀

追答

把int i; 删掉

Answer 3

这个警告是 你定义了i，但是没有使用它

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可以给我一个邮箱帮我改一下吗

追答

你把错误贴出来

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