第七讲：分支结构程序体验

/*Exercise#1:difference*/

int main()
{
    int a,b,t,diff;
    scanf("%d %d",&a,&b);
    if(a<b)
    {
        t=a;
        a=b;
        b=t;
    }
    diff=a-b;
    printf("The difference is %d\n",diff);
    return 0;
}<pre name="code" class="html"><img src="https://img-blog.csdn.net/20150406044806016?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvWXVlbmFjaGVu/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);" alt="" />

*Exercise#2: find largest number*/

int main()
{
int a,b,c,t;
scanf("%d %d %d",&a,&b,&c);
if(a<b)
{
t=a;
a=b;
b=t;
}
if(a<c)
{
a=c;
}
printf("The largest number is %d\n",a);
}

<img src="https://img-blog.csdn.net/20150406044731699?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvWXVlbmFjaGVu/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />

/*Exercise#3: salary*/
/*
int main()
{
int a,w;
scanf("%d",&a);
if(a<40)
{
w=a*20;
}
else
{
w=40*20+(a-40)*30;
}
printf("The wage is %d\n",w);
return 0;
}

总结：单分支结构和双分支结构

           a=t,a=b,b=t 的运用