实验二

#include <stdio.h>
int main() {
int x=1234;
float f=123.456;
double m=123.456;
char ch=‘a‘;
char a[]="Hello, world!"; 
int y=3, z=4;
printf("%d %d\n", y, z);
printf("y=%d, z=%d\n", y,z);
printf("%8d,%2d\n", x,x);
printf("%f, %8f, %8.1f, %0.2f, %.2e\n",f,f,f,f,f);
printf("%lf\n",m);
printf("%3c\n", ch);
printf("%s\n%15s\n%10.5s\n%2.5s\n%.3s\n",a,a,a,a,a);
return 0;
}

#include <stdio.h>
int main() {
double x,y;
char c1,c2,c3;
int a1,a2,a3;
scanf("%d%d%d",&a1,&a2,&a3);
printf("%d,%d,%d\n",a1,a2,a3);
scanf("%c%c%c",&c1,&c2,&c3);
printf("%c%c%c\n",c1,c2,c3);
scanf("%lf,%lf",&x,&y);
printf("%f,%lf\n",x,y);
return 0;
}

#include<stdio.h>
int main(){
int level;
printf("输入现在状态等级（1-5）：");
scanf("%d",&level);
switch(level){
case 1:printf("high翻了:)\n");break;
case 2:printf("low爆了:(\n");break;
default:printf("一言难尽，无法概括。。。\n");
} 
return 0;
}

#include<stdio.h>
int main(){
int level;
printf("输入现在状态等级（1-5）：");
scanf("%d",&level);
switch(level){
case 1:printf("high翻了:)\n");
case 2:printf("low爆了:(\n");
default:printf("一言难尽，无法概括。。。\n");
} 
return 0;
}

#include <stdio.h> 
int main() { 
printf("请输入你的答案（A,B,C or D）");
char x;
scanf("%c,",&x);
if(x==‘A‘)
printf("binggo you are right~");
else
printf("try again~");
return 0; 
}