Question

Write C++ program forgetting the following output. 

1 

1 2 

1 2 3 

1 2 3 4 

OR 

Consider the following C++ program and answer the following questions. 

#include<iostream.h>

int main() 

{ 

int a, p = 1; 

for(a=1;a<=5;a+=2) 

p = p × a;

cout<<p;

}

(a) Predict the output of the above code. 

(b) Rewrite the above program using while loop

Answer 1

#include<iostream>

using namespace std; 

int main() 

{ 

int i,j

for(i=1;i<=4;i++)

{

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

cout<<j<<''\t";

cout<<"\n";

}

}

OR

(a) The output is 15

(b) 

#include<iostream>

using namespace std; 

int main() 

{ 

int a=1,p=1;

while(a<=5)

{

p=p*a;

a+=2;

}

cout<<p;

}