Write the output of the following C codes, with proper justification for each.

i) main()

{

int x = 2, y = 2, z = 2;

x = y == z;

y = z == x;

z = x == y;

printf("%d", z);

} ii) main()

{

int x = -1, y;

x++;

y = x ? 2+x : 3-x;

printf("%d", y);

}

iii) main()

{ int i, j, a = 0;

for(i = 1, j = 1; i <= 5; j++)

{

a = a + i*j++; i = j;

}

printf("%d ", a);

}

iv) main()

{

int x = 5, y = 12;

int *p = &x, *q = &y, *r;

r = p;

p = q;

q = r;

printf("%d, %d", x, y);

}

v) func(int x)

{

static int a = 0;

a += x;

return(a);

}

main()

{ int p;

for(p = 1; p <= 5; ++p)

printf("%d", fun(p));

}

i) Code:

 main() { int x = 2, y = 2, z = 2; x = y == z; y = z == x; z = x == y; printf("%d", z); } 

Output: 1

Explanation:

• x = y == z; checks if y == z (which is true), so x = 1.
• y = z == x; checks if z == x (which is false), so y = 0.
• z = x == y; checks if x == y (which is false), so z = 0.
• The final value of z is 0.
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