Show the exact output of the following codesegments: (a) for(x=0; x< 20; x=x+2)cout< < x < < ‘ ‘; cout< < endl ; (b) i=10; for (; i> 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 <iostream>

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 <iostream>

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;)

universal windows platform is an open source api created by microsoft and first introduced in windows 10. the purpose of this platform is to develop universal apps that run on windows 10, windows 10 mobile, xbox one and hololens without the need to be re-written for each. it supports windows app development using c++, c#, vb.net, and xaml. the api is implemented in c++, and supported in c++, vb.net, c#, f# and javascript. designed as an extension to the windows runtime platform first introduced in windows server 2012 and windows 8, uwp allows developers to create apps that will potentially run on multiple types of devices.

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