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Exercise:

Section 1

► Section 2

Section 3

01. What is the output of following program?
void main(){
int a;
a=453<<16;
printf("%d",a);
}
A. 0 B. 1
C. -1 D. none of these

Answer and Explanation

Answer: 0

Explanation:
There is no explanation...

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02. What will be output of following program?
#include
#include
int main(){
char *ptr1 = NULL;
char *ptr2 = 0;
strcpy(ptr1," c");
strcpy(ptr2,"questions");
printf("\n%s %s",ptr1,ptr2);
return 0;
}  
A. c questions B. c (null)
C. (null) (null) D. Compilation error
E. None of above

Answer and Explanation

Answer: (null) (null)

Explanation:
We cannot assign any string constant in null pointer by strcpy function.

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03. What will be output of following c code?
#include
int main(){
int *p1,**p2;
double *q1,**q2;
printf("%d %d ",sizeof(p1),sizeof(p2)); printf("%d %d",sizeof(q1),sizeof(q2));
getch();
return 0;
}  
A. 1 2 4 8 B. 2 4 4 8
C. 2 4 2 4 D. 2 2 2 2
E. 2 2 4 4

Answer and Explanation

Answer: 2 2 2 2

Explanation:
Size of any type of pointer is 2 byte (In case of near pointer)

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04. Which of the following function sets first n characters of a string to a given character?
A. strinit() B. strnset()
C. strset() D. strcset()

Answer and Explanation

Answer: strnset()

Explanation:
There is no explanation...

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05. The library function used to find the last occurrence of a character in a string is?
A. strnstr() B. laststr()
C. strrchr() D. strstr()

Answer and Explanation

Answer: strrchr()

Explanation:
There is no explanation...

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06. How can we release the allocated memory?
A. remove(var-name); B. free(var-name);
C. delete(var-name); D. dalloc(var-name);

Answer and Explanation

Answer: free(var-name);

Explanation:
There is no explanation...

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07. islower() method is used for?
A. check for lowercase character or not B. conversion for lowercase to uppercase
C. convert to lowercase to uppercase D. None

Answer and Explanation

Answer: check for lowercase character or not

Explanation:
There is no explanation...

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08. tolower() method is used for?
A. convert the upper case character to lower case B. convert the lower case character to upper case
C. both D. None

Answer and Explanation

Answer: convert the upper case character to lower case

Explanation:
There is no explanation...

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09. Which method is used for addition of two strings?
A. strcpy B. strcat
C. strcmp D. strlen

Answer and Explanation

Answer: strcat

Explanation:
There is no explanation...

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10. Which one is used for find the length of string?
A. strcpy B. strlen
C. strcmp D. None

Answer and Explanation

Answer: strlen

Explanation:
There is no explanation...

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