Question

C++

What will be the output of the following program? (Use _ to represent spaces.)

#include <iostream>
using namespace std;

int main ()
{
     int i = 0;
     int firstNum = 1;
     int secondNum = 1;
     const int max = 10;
     int sum = 0;

     cout << firstNum << “ “;
     do
     {
          cout << secondNum << “ “;
          secondNum += firstNum;
          firstNum = secondNum;
          i++;
     }
     while (i <= max);
     cout << secondNum << “ “;

     return 0;
}

Answer 1

answer)

output is :

1_1_2_4_8_16_32_64_128_256_512_1024_2048

first  cout << firstNum << " "; this print "1"

net it go to do while loop

do while run 11 times

in do while first it print the value of secondNum

every secondNum is incremented with firstNum(secondNum=secondNum+firstNum)

firstNum is assigned to secondNum.

like wise dowhile runs 11 times

at the end the value of secondNum is printed.