#include "stdio.h"
int main(){
char a,b,c,d,e;
a=getchar();
b=getchar();
c=getchar();
d=getchar();
e=getchar();
putchar(a);
putchar(b);
putchar(c);
putchar(d);
putchar(e);
return 0;
}
#include "stdio.h"
int main(){
int year;
printf("input the year:");
scanf("%d",&year);
if(year%4==0&&year%100!=0){
printf("year:%d,month:2,days:29",year);}
else if(year%400==0){
printf("year:%d,month:2,days:29",year);}
else printf("year:%d,month:2,days:28",year);
return 0;
}
#include "stdio.h"
#include "math.h"
int main(){
int a,b,c;
printf("请输入三角形的三边:");
scanf("%d%d%d",&a,&b,&c);
if(a+b<c||a+c<b||b+c<a)
printf("该三边不能构成三角形!");
else if(a==b&&b!=c||b==c&&c!=a||a==c&&c!=b&&(pow(a,2)!=pow(b,2)+pow(c,2)||pow(b,2)!=pow(a,2)+pow(c,2)||pow(c,2)!=pow(b,2)+pow(a,2)))
printf("此三角形为等腰三角形。");
else if(a==b&&b==c)
printf("此三角形为等边三角形。");
else if((pow(a,2)==pow(b,2)+pow(c,2)||pow(b,2)==pow(a,2)+pow(c,2)||pow(c,2)==pow(b,2)+pow(a,2))&&(a!=b&&b!=c&&c!=a))
printf("此三角形为直角三角形。");
else if((pow(a,2)==pow(b,2)+pow(c,2)||pow(b,2)==pow(a,2)+pow(c,2)||pow(c,2)==pow(b,2)+pow(a,2))&&(a==b||b==c||c==a))
printf("此三角形为等腰直角三角形。");
else printf("此三角形为一般三角形。");
return 0;
}
#include "stdio.h"
#include "math.h"
double main(){
double a,rate,tax,profit;
printf("请输入你的奖金数:");
scanf("%lf",&a);
if(a<0)
printf("请输入正确的奖金数:");
else if(a<500){
rate=0.00;
tax=a*rate;
profit=a-tax;
printf("a=%lf,rate=%lf,tax=%lf,profit=%lf",a,rate,tax,profit);}
else if(a>=500&&a<1000){
rate=0.05;
tax=a*rate;
profit=a-tax;
printf("a=%lf,rate=%lf,tax=%lf,profit=%lf",a,rate,tax,profit);}
else if(a>=1000&&a<2000){
rate=0.08;
tax=a*rate;
profit=a-tax;
printf("a=%lf,rate=%lf,tax=%lf,profit=%lf",a,rate,tax,profit);}
else if(a>=2000&&a<5000){
rate=0.10;
tax=a*rate;
profit=a-tax;
printf("a=%lf,rate=%lf,tax=%lf,profit=%lf",a,rate,tax,profit);}
else if(a>=5000){
rate=0.15;
tax=a*rate;
profit=a-tax;
printf("a=%lf,rate=%lf,tax=%lf,profit=%lf",a,rate,tax,profit);}
return 0;
}