我一直试图执行以下代码。但是,我一遍又一遍地遇到同样的错误而且我不知道为什么!
我的代码:
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
int main(void){
int randomNum;
char takenWords[4];
char words[20]={"DOG", "CAT", "ELEPHANT", "CROCODILE", "HIPPOPOTAMUS", "TORTOISE", "TIGER", "FISH", "SEAGULL", "SEAL", "MONKEY", "KANGAROO", "ZEBRA", "GIRAFFE", "RABBIT", "HORSE", "PENGUIN", "BEAR", "SQUIRREL", "HAMSTER"};
srand(time(NULL));
for(int i=0; i<4; i++){
do{
randomNum = (rand()%20);
takenWords[i]=words[randomNum];
}while((strcmp(&words[randomNum], takenWords) == 0)&&((strcmp(&words[randomNum], &takenWords[i])==0)));
printf("%s\n", &words[randomNum]);
}
getchar();
return 0;
}
我已经计算了我在数组中输入的元素数量,它们不超过20!
另外,为什么我不断得到&#39;隐式转换失去整数精度错误&#39;?
答案 0 :(得分:5)
我想你想要制作指针数组而不是字符数组。
试试这个:
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
int main(void){
int randomNum;
const char *takenWords[4];
const char *words[20]={"DOG", "CAT", "ELEPHANT", "CROCODILE", "HIPPOPOTAMUS", "TORTOISE", "TIGER", "FISH", "SEAGULL", "SEAL", "MONKEY", "KANGAROO", "ZEBRA", "GIRAFFE", "RABBIT", "HORSE", "PENGUIN", "BEAR", "SQUIRREL", "HAMSTER"};
srand(time(NULL));
for(int i=0; i<4; i++){
int dupe=0;
do{
randomNum = (rand()%20);
takenWords[i]=words[randomNum];
dupe=0;
for(int j=0;j<i;j++){
if(strcmp(words[randomNum],takenWords[j])==0)dupe=1;
}
}while(dupe);
printf("%s\n", words[randomNum]);
}
getchar();
return 0;
}
答案 1 :(得分:3)
char words[20]={"DOG", "CAT", "ELEPHANT", "CROCODILE", "HIPPOPOTAMUS", "TORTOISE", "TIGER", "FISH", "SEAGULL", "SEAL", "MONKEY", "KANGAROO", "ZEBRA", "GIRAFFE", "RABBIT", "HORSE", "PENGUIN", "BEAR", "SQUIRREL", "HAMSTER"};
查看您已仔细声明的数组。它包含什么?
字符串文字(即"DOG"
和其他字符串文字)。
查看数组本身,声明它存储char
char words[20]
这就是错误。
要存储字符串文字,您需要pointer to char
,即char *
由于您有一个字符串文字数组,因此需要一个char *
char* words[20]={"DOG", "CAT", "ELEPHANT", "CROCODILE", "HIPPOPOTAMUS", "TORTOISE", "TIGER", "FISH", "SEAGULL", "SEAL", "MONKEY", "KANGAROO", "ZEBRA", "GIRAFFE", "RABBIT", "HORSE", "PENGUIN", "BEAR", "SQUIRREL", "HAMSTER"};
由于您还使用另一个数组指向字符串文字,因此以相同的方式声明它们
char* takenWords[4];
答案 2 :(得分:1)
这里的代码char words[20]
是一个数组,用于保存20个字符但不包含20个不同字符串的单个字符串/单词。
然而,为了声明20个不同的字符串,请使用2D数组 方式字[20] [20]然后继续声明字符串/单词 您最多选择20个长度。
char words[20][20]={"DOG", "CAT", "ELEPHANT", "CROCODILE", "HIPPOPOTAMUS", "TORTOISE", "TIGER", "FISH", "SEAGULL", "SEAL", "MONKEY", "KANGAROO", "ZEBRA", "GIRAFFE", "RABBIT", "HORSE", "PENGUIN", "BEAR", "SQUIRREL", "HAMSTER"};
注意: char words[20][20]
表示一个数组,用于容纳20个字符串,最大长度为20个字符...
通常
char words[m][n]
其中m,n是整数,包含m个字符串 最大长度(n-1个字符)+(终止空字符)。
答案 3 :(得分:0)
char arr [NUMBER_OF_STRING] [MAX_STRING_SIZE] 声明它的最大字符串大小