c prime plus 第六版 课后习题第2章编程答案

2-1 

#include <stdio.h>
int main(void)
{
    printf("gustav mahler\n");
    printf("gustav\nmahler\n");
    printf("gustav");
    printf("mahler\n");

    return 0;
}

2-2

#include <stdio.h>
int main(void)
{
    printf("name = bcg,\naddress = 苏州");
    return 0;
}

2-3

#include <stdio.h>
int main(void)
{
    int age,days;
    scanf("%d",&age);
    days = age * 365;
    printf("you age is %d,days = %d\n",age,days);
    return 0;

}

2-4

#include <stdio.h>
void jolly(void);
void deny(void);
int main(void)
{
    jolly();
    jolly();
    jolly();
    deny();

    return 0;
}
void jolly(void)
{
    printf("for he is a jolly good fellow!\n");
}
void deny(void)
{
    printf("which nobody can deny!\n");
}

2-5

#include <stdio.h>
void br(void);
void ic(void);
int main(void)
{
    printf("brazil,russia,india,china\n");
    br();
    ic();
    return 0;
}
void br(void)
{
    printf("india,china\n");
}
void ic(void)
{
    printf("brazil,russia\n");
}

2-6

#include <stdio.h>
void one_three(void);
void two(void);
int main(void)
{
    printf("start now:\n");
    one_three();
    two();
    printf("three\n");
    printf("done!\n");
    return 0 ;
}

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

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

2-7

#include <stdio.h>
void laugh(void);
int main(void)
{
    laugh();
    laugh();
    laugh();
    printf("\n");
    laugh();
    laugh();
    printf("\n");
    laugh();
    return 0;
}
void laugh(void)
{
    printf("smile!");
}

2-8

#include <stdio.h>
void one_three(void);
void two(void);
int main(void)
{
    printf("start now:\n");
    one_three();
    two();
    printf("three\n");
    printf("done!\n");
    return 0 ;
}

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

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