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DeleteComment.cpp
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78 lines (74 loc) · 1.09 KB
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/*
* 删除c语言中的单行跟多行注释，注意其中的action
*
*/
#include <stdio.h>
int main(void)
{
char c, state;
state = 0;
while ((c = getchar()) != EOF)
{
if (state == 0)
{
if (c == '/') // 例子： int a = b; /
{
state = 1;
}
else
{
putchar(c); //action
}
}
else if (state == 1)
{
if (c == '/') //例子： int a = b; //
{
state = 2;
}
else if (c == '*') //例子： int a= b; /*
{
state = 3;
}
else //例子： <common/md5.h> or 8/3
{
state = 0;
putchar('/'); //action
putchar(c); //action
}
}
else if (state == 2)
{
if (c == '\n') //例子： int a = b; //hehe<enter>
{
state = 0;
putchar(c); //action
}
//例子： int a = b; //hehe
}
else if (state == 3)
{
if (c == '*') //例子： int a = b; /*heh*
{
state = 4;
}
//例子： int a = b; /*hehe
}
else if (state == 4)
{
if (c == '/') //例子： int a = b; /*hehe*/
{
state = 0;
}
else //例子： int a = b; /*hehe*h
{
state = 3;
}
}
else
{
printf("state error!");
}
}
return 0;
}