C Preprocessor-3

1. What is the C Preprocessor directive to be used to add a header file or any file to existing C program?

a) #add
b) #present
c) #include
d) $include

2. What does #include stdio.h does in c language?

a) It includes stdio.h into existing C program
b) #include increases the size of C program by including the specified file contents like functions, constants etc
c) #include includes specified file before compilation
d) All the above

3. What is the abbreviation of C STDIO in stdio.h?

a) Standard Input Output
b) String Terminating Operations Input Output
c) Store Input Output
d) None of the above

4. What is a Pragma in C language?

a) A Pragma may be an instruction to build tool to process or generate comments
b) A Pragma may be an instruction to compiler to execute specific functions at specific times say startup or exit of program.
c) A pragma may be an instruction to tell compiler to ignore certain warnings.
d) All the above

5. At what stage of building a C program does Pragma work?

a) Before Compilation
b) After compilation
c) After Linking
d) None of the above

6. Which of the following is not true about preprocessor directives

a) They begin with a hash symbol
b) They are processed by a preprocessor
c) They form an integral part of the code
d) They have to end with a semi colon

7.The purpose of the preprocessor directive #error is that ______

a) It rectifies any error present in the code
b) It rectifies only the first error which occurs in the code
c) It causes the preprocessor to report a fatal error
d) It causes the preprocessor to ignore an error

8. atoi() function is used for

a)convert ASCII character to integer value
b)convert a character string to its equivalent integer value
c)gets index value of character in an array
d)converts an array of characters to array of equivalent integers

9. Macro is generally written in

#include <stdio.h>
#define max 100
int main() {
clrscr();
printf("%d", clrscr());
return 0;
}

a) Compilation error
b) Runtime error
c) 17
d) none of the above

10. We can define macros with argument?

#include <stdio.h>
int main() {
printf("%d", 30);
return 0;
}

a) Runtime Error
b) Garbage value
c) Compilation error
d) 30