Q. C preprocessor

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Q. A preprocessor command

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Q. Choose the correct statement.

I. The scope of a macro definition need not be the entire program.
II. The scope of a macro definition extends from the point of definition to the end of the file.
III. New line is a macro definition delimiter.
IV. A macro definition may go beyond a line.

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Q. In which header file is the NULL macro defined ?

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Q. Which standard library function will you use to find the last occurance of a character in a string in C?

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Q. What is the purpose of fflush() function.

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Q. Can you use the fprintf() to display the output on the screen?

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Q. Which of the following are correct preprocessor directives in C?

1: #ifdef
2: #if
3: #elif
4: #undef

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Q. Which of the following are correctly formed #define statements in C?

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Q. In the following code, the P2 is Integer Pointer or Integer?
typedef int *ptr;
ptr p1, p2;

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Q. In the following code what is 'P'?
typedef char *charp;
const charp P;

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Q. Which header file should be included to use functions like malloc() and calloc()?

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Q. What function should be used to free the memory allocated by calloc() ?

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Q. Specify the 2 library functions to dynamically allocate memory?

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Q. Which of the following statement is correct prototype of the malloc() function in c ?

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Q. What is the return type of malloc() or calloc()?

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Q. Which function is used to delete the allocated memory space?

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Q. Among 4 header files, which should be included to use the memory allocation functions like malloc(), calloc(), realloc() and free()?

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Q. Which of the following is/are true?

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Q. Which languages necessarily need heap allocation in the run time environment?

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