41. What will be the output of the following C code if 2 character is typed by the user?
    

    #include <stdio.h>
    #include <string.h>
        int main()
        {
            char line[25];
            fgets(line, 25, stdin);
            printf("%d\n", line[2]);
            return 0;
        }
    

1. 1. Undefined behaviour

   
   
   

   2. 25(ascii value of newline character)

   
   
   

   3. Compilation Error

   
   
   

   4. 64

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   64

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42. What will be the output of the following C code?
    

    #include <stdio.h>
    #include <string.h>
        int main()
        {
            char line[25];
            FILE *fp;
            fp = fopen("file.txt", "r");
            while (fgets(line, 25, fp))
            fputs(line, stdout);
            return 0;
        }
    

1. 1. No.of lines present in file.txt

   
   
   

   2. Infinite loop

   
   
   

   3. Compilation error

   
   
   

   4. Segmentation fault

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   Segmentation fault

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43. gets() does the following when it reads from stdin.
    

1. 1. Deletes the terminating ‘n’

   
   
   

   2. Nothing

   
   
   

   3. Deletes the ‘t’

   
   
   

   4. Puts adds it.

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   Deletes the terminating ‘n’

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44. fputs() function writes a string to a file that only ends with a newline.
    

1. 1. Depends on the compiler

   
   
   

   2. Depends on the standard

   
   
   

   3. True

   
   
   

   4. False

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   False

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45. The syntax of fgets is char *fgets(char *line, int maxline, FILE *fp). Which is true for fgets?
    

1. 1. On end of file or error it returns NULL

   
   
   

   2. Returns line on success

   
   
   

   3. Both On end of file or error it returns NULL & returns line on success

   
   
   

   4. Nothing

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   Both On end of file or error it returns NULL & returns line on success

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