Unknown Error(c-lang), while reading a character from file
I wrote a code in C to read a character from external .txt file. The codes are given below.
#include<stdio.h>
void main()
{
FILE *in;
unsigned char ch;
in=fopen("file.txt","r");
while((ch=fgetc(in))!=EOF)
{
printf("%c",ch);
}
}
after campile it gave the warning :
(ch=fgetc(in))!=EOF) is always true and would be in infinite loop.
But when I removed the unsigned declaration of ch it works fine.
Please, tell me , Why did it give me Warning like that ?
EOF typically is the integer value -1.
Since you defined unsigned char ch; the variable ch is an unsigned value, which will never be able to be -1.
Also...try remember to post your code inside of [code] tags. And also try to keep questions pertaining to C in the C forums (this is the C++ forum).
Last edited by Scribbler; 01-14-2005 at 03:29 AM.
Also remember to use int main() instead of void main().
