文件操作 [英] FILE Operations

问题描述

有人可以编写示例c代码，显示如何在文件中找到

字或char的实例（包括打开和关闭文件）？谢谢

解决方案

史蒂夫在28/07/04写道：

有人可以写一个示例c代码，展示如何在文件中找到一个单词或char的实例（包括打开和关闭文件）？谢谢

这太过分了。你必须自己编写代码。


提示：打开你的C书。


-

Emmanuel

C-FAQ： http://www.eskimo.com/~scs/C-faq/faq.html


C是一个尖锐的工具

>有人可以写一个示例c代码，显示如何在一个文件中找到一个

word或char的实例（包括打开和关闭文件）？谢谢

Steve，

此代码可让您计算给定char的实例：

#include< stdio。 h>

#include< string.h>

int main（）

{

const char fileName [] =" fileName.txt";

const char toCount =''f'';


FILE * f = fopen（fileName，" r"）;

if（！f）

{

printf（" File not found\\\
）;

退出（0）;

}


char s [100];

memset（s，' '\0''，100）;

int count = 0;

while（fgets（s，100，f））

{

char * q =& s [0];

for（; * q！=''\'''; q ++）

{

if（* q == toCount）

count ++;

}

printf（" ;％s"，s）; / *打印每组字符* /

}

memset（s，''\''，100）;

printf（你有％d \％c'' \" \ n"，count，toCount）;

fclose（f）;


返回0;

}

请不要做其他人的家庭工作......

他们不会学习任何东西，他们会告诉他们的朋友：


让comp.lang.c的人做作业！

Can someone write a sample c code showing how one can find an instance of a
word or a char in a file (including opening and closing a file)? Thanks

解决方案

Steve wrote on 28/07/04 :

Can someone write a sample c code showing how one can find an instance of a
word or a char in a file (including opening and closing a file)? Thanks

This is going too far. You have to write the code yourself.

Hints: Open your C book.

--
Emmanuel
The C-FAQ: http://www.eskimo.com/~scs/C-faq/faq.html

"C is a sharp tool"

> Can someone write a sample c code showing how one can find an instance of
a

word or a char in a file (including opening and closing a file)? Thanks

Hi Steve,
This code lets you count the instances of a given char:
#include <stdio.h>
#include <string.h>
int main()
{
const char fileName[] = "fileName.txt";
const char toCount = ''f'';

FILE* f = fopen(fileName, "r");
if(!f)
{
printf("File NOT found\n");
exit(0);
}

char s[100];
memset(s, ''\0'', 100);
int count = 0;
while (fgets(s, 100, f))
{
char * q = &s[0];
for(; *q != ''\0''; q++)
{
if(*q == toCount)
count++;
}
printf("%s", s);/* to print each set of chars*/
}
memset(s, ''\0'', 100);
printf("You have %d \"%c''s\"\n", count, toCount);
fclose(f);

return 0;
}

Please don''t do other''s home work...
They will not learn anything and they will tell their friends:

Just let comp.lang.c people do the homework!

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