c語(yǔ)言改錯(cuò)題以及參考答案

1、1改錯(cuò)參考答案：改錯(cuò)參考答案：(3)(3)將字符串將字符串yyyy在屏幕上輸出在屏幕上輸出#includevoidmain()Foundyy[100]=“okn“Foundf0r(yyyy)put(yy)#includevoidmain()Foundyy=“okn“Foundf(yyyy)put(yy)(4)(4)計(jì)算半徑為計(jì)算半徑為2323的圓的面積的圓的面積#include#definePI3.14Found#defineS(r)P

2、Irrvoidmain()FoundintmianJimianJi=S(23)printf(“mianji=%5.2fn“mianJi)#include#definePI3.14Found#defineS(r)PI(r)(r)voidmain()FoundCommentedCommented[lsj1]:[lsj1]:由于下面的原因，所以此處的yy不能定義成數(shù)組，所以使用指針變量CommentedCommented[lsj2]:[lsj

3、2]:數(shù)組名不能做賦值運(yùn)算和自增運(yùn)算CommentedCommented[lsj3]:[lsj3]:注意：宏定義只做替換工作。所以，用23去替換r，而不是用(23)去替換3Foundif(p=()malloc(100)==NULL)printf(“mallocmemyfail!n“)returnprintf(“%pn“p)Foundfclose(p)#include#includevoidmain()FoundpFoundif((p=(

4、)malloc(100))==NULL)printf(“mallocmemyfail!n“)exit(1)printf(“%pn“p)Foundfree(p)(10)(10)將字符串將字符串p顯示在屏幕上顯示在屏幕上#includeFound#defineBEGINFound#defineENDvoidmain()p=“13125176247“constinti=0f(printf(“n“)p[i])BEGINput(p[i])Foun

5、diEND#includeFound#defineBEGINFound#defineENDCommentedCommented[lsj4]:[lsj4]:p能做賦值運(yùn)算，所以p不能是數(shù)組名，而應(yīng)該是指針變量。CommentedCommented[lsj5]:[lsj5]:用const說(shuō)明的量在程序運(yùn)行過程中始終保持不變，相當(dāng)于常量。所以下面的i是錯(cuò)誤的！CommentedCommented[lsj6]:[lsj6]:這兩條語(yǔ)句都是循環(huán)體