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Input / Output Questions And Answers.

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Exercise :: Input / Output
1.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?
A. "I am a boy\r\n\0"
B. "I am a boy\r\0"
C. "I am a boy\n\0"
D. "I am a boy"
2.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
3.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. The last character in the file.
C. A structure which contains a char pointer which points to the first character of a file.
D. The name of the file.
4.Which of the following operations can be performed on the file "NOTES.TXT" using the below code?
FILE *fp;
fp = fopen("NOTES.TXT", "r+");
A. Reading
B. Writing
C. Appending
D. Read and Write
5.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;
A. printf("%f %lf", a, b);
B. printf("%Lf %f", a, b);
C. printf("%Lf %Lf", a, b);
D. printf("%f %Lf", a, b);