Question

C语言编程，猜字游戏，看看我的程序哪里有错？谢谢！

#include<stdio.h>
int get_word(char w[]);
int find_lett(char w[],char G,int n);
int main(void)
{
int index;
int size;
char g;
char word[4];
char guess[4]="****";
printf("The Game of Hangman – all caps, 4 different characters\n");
printf("Input a word to be guessed: ");
size=get_word(word);
printf("%s",word);
while(word!=guess)
{
printf("Guess: %s",guess);
printf("Input letter> ");
scanf("%c",g);
index=find_lett(word,g,size);
guess[index]=word[index];
}
return(0);
}
int get_word(char w[])
{
int i=0;
scanf("%s",w);
while(w[i]!='\0')
{
i++;
}
return(i);
}
int find_lett(char w[],char G,int n)
{
int i;
int Index;
for(i=0;i<n;i++)
{
if(w[i]=G)
Index=i;
}
return(Index);
}

Answer 1

char word[4] ;你放的是一个字符串，是以'\0'结束的。要定义数组为5个字符，这样才能get_word()取得到word的长度。
另外scanf的用法也不对。
函数中的if比较少写了一个=符号

#include<stdio.h>
#include<string.h>

int get_word(char w[]);
int find_lett(char w[],char G,int n);
int main(void)
{
int index;
int size;
char g;
char word[5]; /* **** */
char guess[5]="****";
printf("The Game of Hangman – all caps, 4 different characters\n");
printf("Input a word to be guessed: ");
size=get_word(word);
printf("%s",word);
while(strcmp(word,guess))
{
printf("Guess: %s",guess);
printf("Input letter> ");
fflush(stdin);
scanf("%c",&g); /* **** */
index=find_lett(word,g,size);
if(index!=-1)
guess[index]=word[index];
}
return(0);
}
int get_word(char w[])
{
int i=0;
scanf("%s",w);
while(w[i]!='\0')
{
i++;
}
return(i);
}
int find_lett(char w[],char G,int n)
{
int i;
int Index=-1;
for(i=0;i<n;i++)/* **** */
{
if(w[i]==G)
{
Index=i;
break;
}
}
return(Index);
}

//循环，用goto来实现，修改后代码：
#include<stdio.h>
#include<string.h>

int get_word(char w[]);
int find_lett(char w[],char G,int n);
int main(void)
{
int index;
int size;
char g;
char word[5]; /* **** */
char guess[5];
loop:
printf("The Game of Hangman – all caps, 4 different characters\n");
printf("Input a word to be guessed: ");
size=get_word(word);
printf("%s\n",word);
strcpy(guess,"****");
while(strcmp(word,guess))
{
printf("Guess: %s",guess);
printf("Input letter> ");
fflush(stdin);
scanf("%c",&g); /* **** */
index=find_lett(word,g,size);
if(index!=-1)
guess[index]=word[index];
}
while(1)
{
printf("\nselect option:Y(continue); N(exit)> ");
fflush(stdin);
g = getchar();

if(g=='y'||g=='Y')
goto loop;
else if(g=='n'||g=='N')
break;

}
return(0);
}
int get_word(char w[])
{
int i=0;
scanf("%s",w);
while(w[i]!='\0')
{
i++;
}
return(i);
}
int find_lett(char w[],char G,int n)
{
int i;
int Index=-1;
for(i=0;i<n;i++)/* **** */
{
if(w[i]==G)
{
Index=i;
break;
}
}
return(Index);
}

Answer 2

#include<stdio.h>
#include<string.h>
int find_lett(char w[],char G,int n);
int main(void)
{
int index;
int size;
char g;
char word[5];
char guess[5]={'*','*','*','*'};
printf("The Game of Hangman – all caps, 4 different characters\n");
printf("Input a word to be guessed: ");
scanf("%s",word);
size=strlen(word);
while(strcmp(word,guess))
{
printf("Guess: %s\n",guess);
printf("Input letter> ");
scanf("%c",&g);
index=find_lett(word,g,size);
guess[index]=word[index];
}
return(0);
}
int find_lett(char w[],char G,int n)
{
int i;
int Index;
for(i=0;i<n;i++)
{
if(w[i]=G)
Index=i;
}
return(Index);
}
能用库函数的已经改为库函数了，虽然不知道你要实现什么输出，但我感觉这个程序的输出不对。你能否吧函数要实现的功能具体的说明一下。

Answer 3

在find_lett函数中，if(w[i]=G) 这个判断条件是肯定又错误的。
应改成if(w[i]==G)