本人新手,下面是rick的答案,不明白的是 if( line[t] == ' " ')
in_quote = 1;
if( ! in_quote )
{ }
else
{}
作者是怎樣確保下面的if在雙引號' “ '內還是在雙引號外的,求大神幫助。原代碼在下面。
#include
#define MAXLINE 1000 /* max input line size /
char line[MAXLINE]; /*current input line/
int getline(void); /* taken from the KnR book. */
int
main()
{
int in_comment,len;
int in_quote;
int t;
in_comment = in_quote = t = 0;
while ((len = getline()) > 0 )
{
t=0;
while(t < len)
{
if( line[t] == '"')
in_quote = 1;
if( ! in_quote )
{
if( line[t] == '/' && line[t+1] == '*')
{
t=t+2;
in_comment = 1;
}
if( line[t] == '*' && line[t+1] == '/')
{
t=t+2;
in_comment = 0;
}
if(in_comment == 1)
{
t++;
}
else
{
printf ("%c", line[t]);
t++;
}
}
else
{
printf ("%c", line[t]);
t++;
}
}
}
return 0;
}
/* getline: specialized version */
int getline(void)
{
int c, i;
extern char line[];
for ( i=0;i<MAXLINE-1 && ( c=getchar()) != EOF && c != '\n'; ++i)
line[i] = c;
if(c == '\n')
{
line[i] = c;
++i;
}
line[i] = '\0';
return i;
}
意思是判斷是否為字符為雙引號