C Questions and Answers – General Utilities – 6

This set of C Multiple Choice Questions & Answers (MCQs) focuses on “General Utilities – 6”.

Pre-requisite for this C MCQ set: Advanced C Programming Video Tutorial.

1. What will the code display on compiling?

void funccall() 
{ 
   printf("this is funccall\n"); 
}  
void main () 
{   
    atexit(funccall); 
    printf("program starts\n");  
    printf("program ends\n");  
}

a)

   program starts
   this is funccall
   program ends

b)

   this is funccall
   program starts
   program ends

c)

   program starts
   program ends
   this is funccall

d) error
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2. What will be the output of the following C code?

int main () 
{ 
   printf("starting of program\n"); 
   printf("program exits\n"); 
   exit(0);  
   printf("program ends\n");  
   return(0); 
}

a)

   starting of program
   program exits
   program ends

b)

   starting of program
   program exits

c)

   starting of program
   program ends

d) error
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3. What will the following C code do on compilation?

void main () 
{
   char com[50];  
   strcpy( com, "dir" ); 
   system(com); 
}

a) error
b) lists down all the files and directories in the current directory under windows machine
c) terminates the calling process immediately
d) calls specified function and terminates it at the end of the program
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4. What will be the output of the following C code?

void main() 
{ 
   div_t  res;  
   res = div(34, 4); 
   printf("quotient part = %d\n", res.quot); 
   printf("remainder part = %d\n", res.rem); 
}

a)

    quotient part=0
    remainder part=4

b)

    quotient part=8
    remainder part=2

c)

    quotient part=4
    remainder part=0

d)

    quotient part=2
    remainder part=8

5. Initial seed is ________ for the function srand(unsigned int seed).
a) 0
b) 1
c) 00
d) 01
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6. Which statement is true with respect to RAND_MAX?
a) specifies value for status argument to exit indicating failure
b) specifies value for status argument to exit indicating success
c) specifies maximum value returned by rand()
d) specifies maximum value returned by srand()
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7. Which of the given function differs from the statement’errno is not neccessarily set on conversion error’?
a) atof()
b) atoi()
c) atol()
d) strtod()
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8. void free(void *p) performs which of the following functions?
a) returns pointer to allocated space for existing contents of p
b) de-allocates space to which p points
c) to abnormally terminate the program
d) no such function defined in stdlib.h
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9. Which of the given option is declared under the header file stdlib.h?
a) SEEK_CUR
b) SEEK_END
c) CLOCKS_PER_SEC
d) EXIT_SUCCESS
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10. MB_CUR_MAX is not defined in stdlib.h.
a) true
b) false
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