我已经编写了一个程序来创建2D单词搜索游戏，该游戏允许用户从类别中进行选择，并且该程序将生成包含来自该类别的单词的单词搜索。 但是，当我编译程序时，出现了一个我从未见过的错误，而且我无法解决该问题。
这是我得到的错误-
TheRealFawcett:Wordsearch therealfawcett$ gcc -o Wordsearch1
Wordsearch1.c
Undefined symbols for architecture x86_64:
"_main", referenced from:
implicit entry/start for main executable
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see
invocation)
TheRealFawcett:Wordsearch therealfawcett$
这是我的代码-
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#define WIDTH 16
#define HEIGHT 16
#define NWORDS 6
char wordsearch[HEIGHT][WIDTH];
/* horizontaly */
int canPlaceH (const char * word, int i, int j)
{
if ((strlen(word) + j) > WIDTH)
return 0;
do {
if ((wordsearch[i][j] != 0) && (wordsearch[i][j] != *word))
return 0;
j += 1;
} while (*++word);
return 1;
};
void placeH(const char * word, int i, int j)
{
do {
wordsearch[i][j++] = *word;
} while (*++word);
};
/* verticaly */
int canPlaceV(const char * word, int i, int j)
{
if ((strlen(word) + i) > HEIGHT)
return 0;
do {
if ((wordsearch[i][j] != 0) && (wordsearch[i][j] != *word))
return 0;
i += 1;
} while (*++word);
return 1;
};
void placeV(const char * word, int i, int j)
{
do {
wordsearch[i++][j] = *word;
} while (*++word);
};
/* diagonal up */
int canPlaceDU(const char * word, int i, int j)
{
int ln = strlen(word);
if (((ln + j) > WIDTH) || ((i - ln) < 0))
return 0;
do {
if ((wordsearch[i][j] != 0) && (wordsearch[i][j] != *word))
return 0;
i -= 1;
j += 1;
} while (*++word);
return 1;
};
void placeDU(const char * word, int i, int j)
{
do {
wordsearch[i--][j++] = *word;
} while (*++word);
};
/* diagonal down */
int canPlaceDD(const char * word, int i, int j)
{
int ln = strlen(word);
if (((ln + j) > WIDTH) || ((i + ln) > HEIGHT))
return 0;
do {
if ((wordsearch[i][j] != 0) && (wordsearch[i][j] != *word))
return 0;
i += 1;
j += 1;
} while (*++word);
return 1;
};
void placeDD(const char * word, int i, int j)
{
do {
wordsearch[i++][j++] = *word;
} while (*++word);
};
void fillWordsearch(const char ** a, int sz)
{
/* first step add words from a */
const char * used[NWORDS - 1] = { NULL }; /* to not get two times
the same word */
for (int w = 0; w != NWORDS; ++w) {
/* random choice of a word not yet used */
const char * word;
for (;;) {
word = a[rand() % sz];
int i;
/* check not yet used */
for (i = 0; i != w; ++i)
if (!strcmp(used[i], word))
break;
if (i == w) {
/* not yet used */
used[w] = word;
break;
}
};
/* random placement */
int i, j, d;
typedef int (*canFunc)(const char *, int, int);
typedef void (*placeFunc)(const char *, int, int);
const canFunc canPlace[] = { canPlaceH, canPlaceV, canPlaceDU,
canPlaceDD };
const placeFunc place[] = { placeH, placeV, placeDU, placeDD };
do {
i = rand() % HEIGHT;
j = rand() % WIDTH;
d = rand() % 4;
} while (!(*canPlace[d])(word, i, j));
(*place[d])(word, i, j);
#ifdef DEBUG
for (int i = 0; i != HEIGHT; ++i) {
for (int j = 0; j != WIDTH; ++j)
putchar((wordsearch[i][j] == 0) ? '.' : wordsearch[i][j]);
putchar('\n');
};
putchar('\n');
#endif
/* second step fill not yet set characters with random lowercase
letters */
int q,w;
for (q = 0; q < HEIGHT; q++)
for (w = 0; w != WIDTH; ++w)
if (wordsearch[q][w] == 0)
wordsearch[q][w] = 'a' + rand() % ('z' - 'a' + 1);
};
int main();
const char *animalArray[] = {
"lynx",
"kitten",
"cheetah",
"ape",
"doe",
"reindeer",
"whale",
"baboon",
"skunk",
"dugong",
"elephant",
"anteater",
"chameleon",
"lizaed",
"horse"
};
const char *colourArray[] = {
"red",
"green",
"blue",
"black",
"pink",
"yellow",
"brown",
"orange",
"purple",
"black",
"white",
"cyan",
"maroon",
"magenta",
"grey"
};
const char *videogameArray[] = {
"fortnite",
"fifa",
"hytale",
"soma",
"prey",
"destiny",
"titanfall",
"woldenstein",
"battlefield",
"fallout",
"tekken",
"skyrim",
"dishonored",
"uncharted",
"anthem"
};
const char *sportsArray[] = {
"basketball",
"football",
"cricket",
"wrestling",
"fencing",
"rowing",
"volleyball",
"baseball",
"hockey",
"racing",
"golf",
"bobsleigh",
"curling",
"snowboarding",
"bowling"
};
const char *countryArray[] = {
"england",
"ireland",
"china",
"wales",
"bangladesh",
"maldives",
"slovenia",
"uruguay",
"colombia",
"samoa",
"jamaica",
"malta",
"bulgaria",
"armenia",
"gamnbia"
};
printf("--------------------------------\n");
printf("| Welcome to the WordSearch Game|\n");
printf("--------------------------------\n");
printf("Choose a Category - \n");
printf("Option 1 - Animals\n");
printf("Option 2 - Colours\n");
printf("Option 3 - Video Games\n");
printf("Option 4 - Sports\n");
printf("Option 5 - Countries\n");
int i;
if ((scanf("%d", &i) != 1) || (i < 1) || (i > 5))
return;
srand(time(NULL));
switch (i) {
case 1:
fillWordsearch(animalArray,
sizeof(animalArray)/sizeof(*animalArray));
break;
case 2:
fillWordsearch(colourArray,
sizeof(colourArray)/sizeof(*colourArray));
break;
case 3:
fillWordsearch(videogameArray,
sizeof(videogameArray)/sizeof(*videogameArray));
break;
case 4:
fillWordsearch(sportsArray,
sizeof(sportsArray)/sizeof(*sportsArray));
break;
default:
fillWordsearch(countryArray,
sizeof(countryArray)/sizeof(*countryArray));
break;
};
/* print result */
for (i = 0; i != HEIGHT; ++i) {
for (int j = 0; j != WIDTH; ++j)
putchar(wordsearch[i][j]);
putchar('\n');
};
return;
};
这是我遇到的新错误，但是当我更改它们时，我得到了新错误。
这是我得到的最少错误-
TheRealFawcett:Wordsearch therealfawcett$ gcc -o Wordsearch1
Wordsearch1.c
Wordsearch1.c:173:1: error: expected identifier or '('
{
^
1 error generated.
TheRealFawcett:Wordsearch therealfawcett$
答案 0 :(得分：0)
您在哪里：
int main();
const char *animalArray[] = {
您应该拥有：
int main()
{
const char *animalArray[] = {
答案 1 :(得分：0)
您似乎没有main函数。我看到那条线
int main();
，但未在任何地方实现。您得到的错误是因为编译器不知道从哪里启动程序。也许这是一个错字。
也许您不是要关闭fillWordsearch函数并启动main()函数。
}
int main()
{
答案 2 :(得分：0)
该错误表明您未提供main()函数。查看您的代码，我看到以下内容：
int main();
这是函数声明，而不是定义。看来您已经忘记了main()函数主体周围的花括号。
我还看到您一直在所有功能的右括号后面加上分号。这不是必需的，这让我想知道您正在使用什么可怕的资源来学习C。
编辑：
您的fillWordsearch()函数的花括号不平衡。它在某处缺少}大括号。