riodohee

#include <iostream>

int main()

{

using namespace std;

int count = 0;

for (; count < 10; ++count)

{

cout << count << endl;

}

cout << count << endl;

return 0;

}

#include <iostream>

int pow(int base, int exponent)

{

int result = 1;

for (int count = 0; count < exponent; ++count)

result *= base;

return result;

}

int main()

{

using namespace std;

cout << pow(2, 4) << endl;

return 0;

}

for (int count = 9; count >= 0; count -=2)

{

cout << count << endl;

}

for (int i = 0, j = 0; i < 10; ++i, --j)

{

cout << i << " " << j << endl;

}

int selection; //do-while밖에 있어야 됨. 

do 

{

cout << "1. add" << endl;

cout << "2. sub" << endl;

cout << "3. mult" << endl;

cout << "4. div" << endl;

cin >> selection;

} while (selection <= 0 || selection >= 5); //do-while 다음에 ';' 찍어야 됨 

cout << "You selected" << selection << endl;

int count = 0; //counter선언

while ( count < 10 ) //while 조건이 true여야 출력된다. 

{

cout << count << endl;

++count;

if( count == 10 ) break;

}

int count = 1;

while( count < 100)

{

if( count%5 == 0 ) cout << "Hello" << count << endl;

count ++;

} 

int outer_count = 1;

while (outer_count <= 5)

{

int inner_count =1;

while(inner_count <= outer_count)

{

cout << inner_count++ << " ";

}

cout << endl;

++outer_count;

double x;

tryAgain : // label

cout << "Enter a non-negative number" << endl;

cin >> x;

if(x <0.0)

goto tryAgain; //tryAgain(label)로 돌아가라 

cout << sqrt(x) << endl;