Why does this C program print weird characters in output?

Question

I\'ve the following program:

#include 

int main()
{
        int ch;
        while( ch = getchar() != \'\\n\') {
                printf(\"Read         


        

Answer 1

ch = getchar() != '\n'

Writing this will cause unexpected behavior depending on the languages operator precedence. In C = is evaluated after != so ch will be true or false. Try:

(ch = getchar()) != '\n'