从C程序获取错误的输出

Question

I'm new to C programming. I have written a program and I am getting the output 0 1 when 'a' is entered through the keyboard. From what I know about the for loop, it should not execute the statements of the body if the condition becomes false . So the output should be 0 when 'a' is entered.

#include<stdio.h>
main()
{   int c;

    long nc=0;
    for(nc=0;c=getchar()!=EOF;++nc)
    {
        printf("%ld \n",nc);
    }
}

Answer 1

You entered a then <return> , so 2 chars are available for input, 0 is written for the first and 1 for the second. Everything correct.

--EXPLANATION REQUESTED BY OP--

start with nc equals to 0, first call to getchar() reads a , nc equals to 0 then 0 is printed, nc incremented so now equals to 1; then second call to getchar() reads newline , nc equals to 1 then 1 is printed, nc incremented so now equals to 2.