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cwhile-loopinfinite-loop

Loop never stops

I have this program for reading char by char a file and print it out on the screen:

#include<stdio.h>

int main()
{
    unsigned char mychar;
    FILE *fp;
    fp=fopen("test.txt", "r");
    while((mychar = getc(fp))!=EOF)
        printf("%c", mychar);
    fclose(fp);
    return 0;
}

It prints the file but then it continues to loop forever. Can you help me?

Solution

  • EOF have value -1 So, why do you declare mychar as unsigned char?

    Please change with this:

    int main()
{
    int mychar;
    FILE *fp;
    fp=fopen("test.txt", "r");
    while((mychar = getc(fp))!=EOF)
        printf("%c", mychar);
    fclose(fp);
    return 0;
}