Do while in c plus plus?

Answer 1

The do while loop is useful for the special loops that they must circulate at least one time.

#include <iostream>

using namespace std;

int main()

{

int num,digit;

cout<<"Enter a #\n";

cin>>num;

cout<<"Invers is : ";

do

{

digit=num/10;

cout<<digit;

num/=10;

} while(num != 0);

return 0;

}

Answer 2

//do while example

#include<stdio.h>

int main(void)

{

const int SECRET_CODE = 15;

int code;

do{

printf("Type the secret code number to enter.\n");

scanf("%d", &code);

}while(code!=SECRET_CODE);

printf("Well done , you can now enter\n");

return 0;

}

#include <stdio.h>

main()

{

int i = 10;

do

{

printf("Hello %d\n", i );

i = i -1;

}while ( i > 0 );

}

/*break in do while*/

#include <stdio.h>

main()

{

int i = 10;

do

{

printf("Hello %d\n", i );

i = i -1;

if( i == 6 )

{ break;

}

}while ( i > 0 );

}

Answer 3

#include<iostream>

int main()

{

// Count from 1 to 10 using do-while loop.

int i=0;

do

{

std::cout<<++i<<std::endl;

}while i<10);

// Note: i is 10 at this point...

}

Answer 4

Unlike the while() loop, a do..while() loop always executes at least once. Iteration is dependant on the conditional expression which is evaluated at the end of the loop, whereas a while() loop's conditional expression is evaluated before entering the loop, and may never execute. for() loops are also evaluated before entering the loop, but the conditional expression is optional.

Answer 5

int main (int argc, char **argv)
{
int i;

i= -1;
while (++i < argc) printf ("%d. '%s'\n", i, argv[i]);
}

Answer 6

usable

do statement while (expression);