C Programming Mock Test 9

10%

Question 1 of 10

1. What is the purpose of the given C code?

#include <stdlib.h> 
_Mbsave _Mbxtowc = {0};  
int (mbtowc) (wchar_t *pwc, const char *a, size_t n) 
{
return (-Mbtowc (pwc, s, n, &-Mbxtowc) ) ;
}

determine length of next multibyte code

translate multibyte string to wide char string

translate wide character to multibyte string

translates multibyte character to wide character

Question 1 of 10

Question 2 of 10

2. _______variable type defined in the header stdlib.h is an integer type of the size of a wide character constant.

ldiv_t

wchar_t

div_t

size_t

Question 2 of 10

Question 3 of 10

3. The mbstowcs() function is used to return the number of array elements modified, not including a terminating zero code, if any.

true

false

Question 3 of 10

Question 4 of 10

4. Which function is used to recombine the fraction and exponent parts of a floating-point value after you have worked on them separately?

Idexp()

modf()

frexp()

exp()

Question 4 of 10

Question 5 of 10

5. 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); 
}

   starting of program
   program exits

   starting of program
   program ends

   starting of program
   program exits
   program ends

error

Question 5 of 10

Question 6 of 10

6. The number of bytes contained in the multibyte character pointed to by a character is ___________

mblen()

bsearch()

getenv()

qsort()

Question 6 of 10

Question 7 of 10

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

char str[20];
str= "123546"; res= atof(str);
printf("String value = %s, Float value = %f\n", str, res);

String value = 123546 , Float value = 0.000000

String value = 123546 , Float value = 123546.000000

String value = 123546, Float value = 123546.0

String value = 123546 , Float value = 123546.000

Question 7 of 10

Question 8 of 10

8. Which of the following is the correct description of the macro SIGFPE?

invalid access to storage

erroneous arithmetic operation such as zero divide

termination request sent to the program

receipt of the interactive attention signal

Question 8 of 10

Question 9 of 10

9. Which function searches an environmenr list that are provided by the host environment?

system()

rand()

getenv()

srand()

Question 9 of 10

Question 10 of 10

10. The______function is used to convert the initial portion of the string pointed to by, to unsigned long int representation.

strtod()

strtol()

atol()

strtoul()

Question 10 of 10