int a,b,c; scanf(“%d”,&a);//输入a if(a==0) //如果a等于0,进入, { printf(“welcome here\n”); scanf(“%d”,&b); //输入b if(b==5) //判断b是不是等于5,如果等于,输出you intput is 5,该函数体结束 { printf(“you intput is 5\n”); } else if(b>5) { printf(“Mor...