ISRO CS 2015

Question 71

Which of the following has the compilation error in C?

• int n = 17;

• char c = 99;

• float f = (float)99.32;

• <include>

Question 72

The for loop

for (i=0; i<10; ++i)
printf("%d", i&1);

prints:

• 0101010101
• 0111111111
• 0000000000
• 1111111111

Question 73

Consider the following statements

#define hypotenuse (a, b) sqrt (a*a+b*b); 

The macro call hypotenuse(a+2,b+3);

• Finds the hypotenuse of a triangle with sides a+2 and b+3
• Finds the square root of (a+2)² and (b+3)²
• Is invalid
• Find the square root of 3*a + 4*b + 5

Question 74

In X = (M + N x O)/(P x Q), how many one-address instructions are required to evaluate it?

• 4
• 6
• 8
• 10

Question 75

The decimal number has 64 digits.The number of bits needed for its equivalent binary representation is?

• 200
• 213
• 246
• 277

Question 76

Consider the following code fragment void foo(int x, int y) { x+=y; y+=x; } main() { int x=5.5; foo(x,x); } What is the final value of x in both call by value and call by reference, respectively?

• 5 and 16
• 5 and 12
• 5 and 20
• 12 and 20

Question 77

The correct syntax to write "Hi there" in Javascript is

• jscript.write ("Hi There");
• document.write ("Hi There");
• print ("Hi There");
• print.jscript ("Hi There");

Question 78

If n has 3, then the statement a[++n]=n++;

• assigns 3 to a[5]
  

• assigns 4 to a[5]
  

• assigns 4 to a[4]
  

• what is assigned is compiler dependent
  

Question 79

Consider the following C declaration 

struct (
short s[5];
union {
float y;
long z;
}u;
}t;

Assume that the objects of the type short, float and long occupy 2 bytes, 4 bytes and 8 bytes, respectively. The memory requirement for variable t, ignoring alignment consideration, is

• 22 bytes
  

• 18 bytes
  

• 14 bytes
  

• 10 bytes
  

Question 80

A T-switch is used to

• Control how messages are passed between computers
• Echo every character that is received
• Transmit characters one at a time
• Rearrange the connections between computing equipments