#include<iostream> #include<s

Nivio Technologies Interview Question for Software Engineers

0

of 0 votes

5
Answers
#include<iostream>
#include<stdio.h>
using namespace std;
int main()
{
int i=1;
printf("He");
do
{
while(i<5)
{
cout<<"Hello";
i++;
}
}
while(1);
}
What will be output of the program and why ??

class Demo
{
public static void main(String args[])
{
int i=1;
do
{
while(i<5)
{
System.out.println("Hello");
i++;
}
}
while(true);
}
}

what will be output of java program ??
how it diff ??
- mukeshsharma787898 January 31, 2015 in United States | Report Duplicate | Flag | PURGE
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Comment hidden because of low score. Click to expand.

of 1 vote

The first one won't have any output since the stdout stream wasn't flushed by a newline (or a manual call).

In Java, the method called is println, so it's adding a newline at the end of the string, causing the stream to flush.

- francisvm January 31, 2015 | Flag Reply

Comment hidden because of low score. Click to expand.

of 0 votes

but in normal hello word c++ program we does not need to add \n it print output automatically , then in this case why output is nothing

- nikesh joshi February 02, 2015 | Flag

Comment hidden because of low score. Click to expand.

of 1 vote

Because your stdout stream is flushed when the program exits.

In this case, the program won't exit normally since the while(true) is blocking it.

- francisvm February 02, 2015 | Flag

Comment hidden because of low score. Click to expand.

of 2 vote

Both program will print "Hello" 4 times and after that will run in infinite loop.

In java while loop or do while loop evaluates to boolean.
In C or C++ , 0 is false while any positive number is true.

- sumit January 31, 2015 | Flag Reply

Comment hidden because of low score. Click to expand.

of 0 vote

the first code will produce the "He" then "hello" 4 times in single line without spaces and it run in infinite loop.

the second code will produce only "Hello" 4 times in four lines and it run in infinite loop.

- Moustafa Sayed February 04, 2015 | Flag Reply

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of 0 vote

1 program prints HeHelloHelloHelloHello in one line
2 program prints 4 times Hello;
Hello
Hello
Hello
Hello

- Som March 27, 2015 | Flag Reply

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