Question

What is printed by the following C program?
int f(int x, int*py, int ** ppz)
{ int y, z;
**ppz + = 1; z = **ppz;
*py + = 2; y = *py;
x+ =3;
return x+ y + z;
}
void main( )
{ int c, *b, **a;
c = 4; b = &c; a = &b;
print ("%d", f(c, b, a));
}

• A. 21
• B. 22
• C. 18
• D. 19

Answer 1

The correct option is D 19

f(c, b, a) is called by the main( ) function the graphical execution of the program is given below.

$\Rightarrow$ x + y + z = 7 + 7 +5 = 19
int y, z;
**ppz = ** ppz +1;
z = **ppz = 5;
*py = *py +2;
y = * py = 7
x = 4+3 = 7
return x + y + z = 19