C Prime Plus编程练习（第二章）

1.

#include <stdio.h>

int main(void) {
	printf("Gustav Mahler\n");
	printf("Gustav \nMahler\n");
	printf("Gustav");
	printf(" Mahler\n");
    return 0;
}

3.

#include <stdio.h>

int main(void) {
	int age_years = 25;
	int age_days;

	age_days = age_years * 365;
	printf("Your Age is %d years old.\n", age_years);
	printf("Your age is %d days old!", age_days);
	return 0;
}

4.

#include <stdio.h>

void jolly(void);
void deny(void);

int main(void) {
	jolly();
	jolly();
	jolly();
	deny();
	return 0;
}


void jolly(void) {
	printf("For he's a jolly good fellow!\n");
}

void deny(void) {
	printf("Which nobody can deny!");
}

5.

#include <stdio.h>

void br(void);
void ic(void);

int main(void) {
	br();
	printf(", ");
	ic();
	printf("\n");
	ic();
	printf(",\n");
	br();
	return 0;
}

void br(void) {
	printf("Brazil, Russia");
}

void ic(void) {
	printf("India, China");
}

6.

#include <stdio.h>

int main(void) {
	int toes = 10;
	printf("toes is %d\n", toes);
	printf("toes twice is %d\n", toes * 2);
	printf("toes squared is %d\n", toes * toes);
	return 0;
}

7.

#include <stdio.h>

void smile(void);

int main(void) {
	smile();
	smile();
	smile();
	prinf("\n");
	smile();
	smile();
	printf("\n");
	smile();
	return 0;
}

void smile(void) {
	printf("Smile!");
}

8.

#include <stdio.h>

void one_three(void);
void two(void);

int main(void) {
	printf("starting now:\n");
	one_three();
	printf("done!");
	return 0;
}

void one_three(void) {
	printf("one\n");
	two();
	printf("three\n");
}

void two(void) {
	printf("two\n");
}