Programming Questions

Q:

main()

{

char s[ ] = "man";

int i;

for( i=0; s[ i ]; i++)

printf( "n%c%c%c%c", s[ i ], *(s+i), *(i+s), i[s] );

}

A) mmmm aaaa nnnn B) aaaa mmmm nnnn
C) nnnn aaaa mmmm D) None
 
Answer & Explanation Answer: A) mmmm aaaa nnnn

Explanation:

s[i], *(i+s), *(s+i), i[s] are all different ways of expressing the same idea.Generally array name is the base address for that array. Here s is the base address. i is the index number/displacement from the base address. So, indirecting it with * is same as s[i]. i[s] may be surprising. But in the case of C it is same as s[i].

Report Error

View Answer Workspace Report Error Discuss

Filed Under: Programming

3 2514
Q:

main()

{

char *p; p = "Hello";

printf ("%cn", *&*p);

}

A) H B) Hello
C) Compilation error D) H E L L O
 
Answer & Explanation Answer: A) H

Explanation:

* is a dereference operator & is a reference operator. They can be applied any number of times provided it is meaningful. Here p points to the first character in the string "Hello". *p dereferences it and so its value is H. Again & references it to an address and * dereferences it to the value H

Report Error

View Answer Workspace Report Error Discuss

Filed Under: Programming
Job Role: Software Architect

2 2241
Q:

#define clrscr() 100

main()

{

clrscr();

printf( "%dn", clrscr() );

}

A) 100 B) 0
C) Compilation error D) Exception occurs
 
Answer & Explanation Answer: A) 100

Explanation:

Preprocessor executes as a seperate pass before the execution of the compiler. So textual replacement of clrscr() to 100 occurs.The input program to compiler looks like this :

main ()

{

100;

printf("%d\n",100);

}

Note: 100; is an executable statement but with no action. So it doesn't give any problem

Report Error

View Answer Workspace Report Error Discuss

Filed Under: Programming

0 1840
Q:

Which of the following statement is true?

A) Cohesion is the OO principle most closely associated with hiding implementation details B) Cohesion is the OO principle most closely associated with making sure that classes know about other classes only through their APIs
C) Cohesion is the OO principle most closely associated with making sure that a class is designed with a single, well-focused purpose D) None
 
Answer & Explanation Answer: C) Cohesion is the OO principle most closely associated with making sure that a class is designed with a single, well-focused purpose

Explanation:

A refers to encapsulation, B refers to coupling

Report Error

View Answer Workspace Report Error Discuss

Filed Under: Programming

0 1636
Q:

What will be output when you will execute following c code?

#include <stdio.h>
void main()

{
    int const SIZE = 5;
    int expr;
    double value[SIZE] = { 2.0, 4.0, 6.0, 8.0, 10.0 };
    expr=1|2|3|4;
    printf ( "%f", value[expr] );
}

A) 2.000000 B) 4.000000
C) 8.000000 D) Compilation error
 
Answer & Explanation Answer: D) Compilation error

Explanation:

Size of any array in c cannot be constantan variable.

Report Error

View Answer Workspace Report Error Discuss

Filed Under: Programming

0 1519