What will be the output of the program? #include<stdio.h> int main() {

CuriousTab

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Question

What will be the output of the program?

#include<stdio.h>

int main()
{
    FILE *fp;
    unsigned char ch;
     /* file 'abc.c' contains "This is CuriousTab " */
    fp=fopen("abc.c", "r");
    if(fp == NULL)
    {
        printf("Unable to open file");
        exit(1);
    }
    while((ch=getc(fp)) != EOF)
        printf("%c", ch);

    fclose(fp);
    printf("\n", ch);
    return 0;
}

Options
A. This is CuriousTab
B. This is
C. Infinite loop
D. Error

Correct Answer

Infinite loop

Explanation

The macro EOF means -1.

while((ch=getc(fp)) != EOF) Here getc function read the character and convert it to an integer value and store it in the variable ch, but it is declared as an unsigned char. So the while loop runs infinitely.

More questions

1. Bitwise can be used to reverse a sign of a number.
Options
A. Yes
B. No

Discuss

Correct Answer: No

2. Is it necessary that in a function which accepts variable argument list there should be at least be one fixed argument?
Options
A. Yes
B. No

Discuss

Correct Answer: Yes

3. Bitwise can be used to generate a random number.
Options
A. Yes
B. No

Discuss

Correct Answer: No

4. A function that receives variable number of arguments should use va_arg() to extract the last argument from the variable argument list.
Options
A. True
B. False

Discuss

Correct Answer: False