#includevoid main( ){ int a,b,t; scanf("%d %d",&a,&b); if(a { t =a; a = b; b =t; } printf("%d %d\n",a,b);}
if(ab,把a b的值互换，下面是互换代码 { t=a; a=b; b=t; }
if(a{t=b;b=a;a=t;}
if(a < b){ t = a; a = b; b = t;}
