Show the exact output of the following codesegments: (a) for (x=0; x<20; x=x+2) cout<< x << ' '; cout<0; i = i/2; ) cout<< i;

a)

for (x=0; x<20; x=x+2)

cout<< x << ' ';

cout<< endl;

Output

0 2 4 6 8 10 12 14 16 18

In this code we are initialing x with 0, check if it is less than 20, then printing the value 0.

Then we increment x value with 2 and check and print again until the x value tends to be equal or more than 20.

C+ + program for verifying

#include

using namespace std;

int main ()

{

int x;

for (x=0; x<20; x=x+2)

cout<< x << ' ';

cout<< endl;

return 0;

}

Output

0 2 4 6 8 10 12 14 16 18

(You can check on any ide for confirmation)

b)

i=10;

for (; i>0; i = i/2; )

cout<< i;

This code will produce error expected ') ' before '; ' token

for (; i>0; i = i/2; )

because for loop consist three parameters and in this loop there are 4 parameters.

If we remove semicolon after i/2,

for (; i>0; i = i/2)

then it will produce an output.

10 5 2 1

C+ + program for verifying

#include

using namespace std;

int main () {

int i=10;

for (; i>0; i = i/2; )

cout<< i;

return 0;

}

Output

Error-expected ') ' before '; ' token

for (; i>0; i = i/2; )