警告:内置函数“strlen"和“strcpy"的隐式声明不兼容 [英] warning: incompatible implicit declaration of built-in function 'strlen' and 'strcpy'
问题描述
我刚刚完成了我的刽子手游戏,作为最后一步,我正在进行一些代码清理和优化,但我似乎无法理解为什么我会收到以下两个警告:
I just finnished my hangman game and as a last step I am doing some code cleanup and optimization, but I can't seem to understand why I receive the following two warnings:
警告:内置函数 'strlen' 的隐式声明不兼容
warning: incompatible implicit declaration of built-in function 'strlen'
警告:内置函数'strcpy'的隐式声明不兼容
warning: incompatible implicit declaration of built-in function 'strcpy'
使用它们的代码在这里:
The code in which they are used is here:
for(i = 1; i <= random; i++)
fgets(word, 100, f);
fclose(f);
for(i = 0; i < strlen(word); i++)
if(word[i] == '\n')
word[strlen(word)-1] = '\0';
lungime = strlen(word);
strcpy(word2, word);
我所做的是使用 fgets 从文件中读取一个随机单词.在此之后,我删除了 fgets 自动放置的 '\n'.最后,我把word2中的word复制了一份.
What I done was to read a random word from a file, using fgets. After this, I removed the '\n' which fgets automatically puts. Finally, I made a copy of the word in word2.
使用的库:
#include<stdio.h>
#include<stdlib.h>
#include<time.h>
变量声明:
int random, n = 0, i, j, lengh, tries = 5, ok = 0, error = 0;;
char word[100], word2[100], tried_letters[50], auxch;
注意:在我的程序中一切正常,但我收到了我想摆脱的两个警告.
Note: everything works perfect in my program, but I receive those two warnings which I would like to get rid of.
提前致谢.
推荐答案
需要使用
#include <string.h>
得到strcpy()
和strlen()
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