Input / Output General Questions - C Programming Questions and Answers

In a file contains the line "I am a boy\r\n" then on reading this line into the array str using fgets(). What will str contain?

What is the purpose of "rb" in fopen() function used below in the code?

FILE *fp;
fp = fopen("source.txt", "rb");

A.	open "source.txt" in binary mode for reading
B.	open "source.txt" in binary mode for reading and writing
C.	Create a new file "source.txt" for reading and writing
D.	None of above

What does fp point to in the program ?

#include<stdio.h>

int main()
{
    FILE *fp;
    fp=fopen("trial", "r");
    return 0;
}

A.	The first character in the file
B.	A structure which contains a char pointer which points to the first character of a file.
C.	The name of the file.
D.	The last character in the file.

Which of the following operations can be performed on the file "NOTES.TXT" using the below code?

FILE *fp;
fp = fopen("NOTES.TXT", "r+");

To print out a and b given below, which of the following printf() statement will you use?

#include<stdio.h>

float a=3.14;
double b=3.14;