ntcho

for i in range(0, 6):
  print i

j = 0
while j < 5:
  print j
  j += 1

k = 0
while True:

ntcho

int main() {
		int i = 0, j = 0, k = 0;
		// for statement
		for (i = 0; i < 5; i++) {
			print(i);
		}
		
		// while statement
		while (j < 5) {
			print(j++);

ntcho

public static void main(String args[]) {
		int i = 0, j = 0, k = 0;
		// for statement
		for (i = 0; i < 5; i++) {
			print(i);
		}
		
		// while statement
		while (j < 5) {
			print(j++);

ntcho

Traceback (most recent call last):
  File "FILENAME", line 12, in <module>
    repeat_lyrics()
NameError: name 'repeat_lyrics' is not defined

Process finished with exit code 1

ntcho

def print_lyrics():
    print "I'm a lumberjack, and I'm okay"
    print "I sleep all night and I work all day"


# repeat_lyrics()
# return an error: "NameError: name 'repeat_lyrics' is not defined"


def repeat_lyrics():

ntcho

#include <iostream>

void swap(int *n1, int *n2);
void swap(char *n1, char *n2);
void swap(double *n1, double *n2);

int main() {
	int num1 = 20, num2 = 30;
	swap(&num1, &num2);
	std::cout << num1 << ' ' << num2 << std::endl;