实验1

`#include int main() { double a, b, c; scanf("%lf%lf%lf", &a, &b, &c); if(a+b>c&a-b<c) printf("能构成三角形\n"); else printf("不能构成三角形\n"); return 0; }`

#include <stdio.h>
int main()
{
double a, b, c;

scanf("%lf%lf%lf", &a, &b, &c);
if(a+b>c&a-b<c)
printf("能构成三角形\n");
else
printf("不能构成三角形\n");

return 0;
}

 

#include<stdio.h>
int main(){
    printf(" o \n<H>\nI I\n");
    return 0;
}

　　

#include<stdio.h>
 
 int main(){
     for(int i=0;i<2;i++){
         printf(" O\n");
        printf("<H>\n");
        printf("I I\n");
     }
      return 0;
 }

#include <stdio.h>
int main()
{
printf(" O    O\n");
printf("<H>  <H>\n");
printf("I I  I I\n");
return 0;
}

#include <stdio.h>
int main()
{
char ans1, ans2; 
printf("每次课前认真预习、课后及时复习了没? (输入y或Y表示有，输入n或N表示没有) : ");
ans1 = getchar();
getchar(); 
printf("\n动手敲代码实践了没? (输入y或Y表示敲了，输入n或N表示木有敲) : ");
ans2 = getchar();
if ((ans1=='y' || ans1=='Y') &&(ans2=='y' || ans2=='Y'));{
printf("\n罗马不是一天建成的, 继续保持哦:)\n");
}else{
printf("\n罗马不是一天毁灭的, 我们来建设吧\n");}
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);//少打& 
     printf("a1 = %d, a2 = %d, a3 = %d\n", a1,a2,a3);
     
     scanf("%c%c%c", &c1, &c2, &c3);
     printf("c1 = %c, c2 = %c, c3 = %c\n", c1, c2, c3);
    
     scanf("%lf,%lf", &x, &y);//存在格式问题 
     printf("x = %lf, y = %lf\n",x, y);
 
     return 0;
 }

 

#include <stdio.h>
int main() 
{
    int year;
    long long seconds=1000000000;
    int seconds_per_year=365*24*60*60;
    year=seconds/seconds_per_year;
    printf("10亿秒约等于%d年\n", year);
    return 0;
}

#include <stdio.h>
#include <math.h>
int main()
{
    double x, ans;
    
    scanf("%lf", &x); 
    ans = pow(x, 365);
    printf("%.2f的365次方: %.2f\n", x, ans);
    return 0; 
}

#include <stdio.h>
#include <math.h>
int main()
{
double x, ans;
while(scanf("%lf", &x) != EOF)
{
ans = pow(x, 365);
printf("%.2f的365次方: %.2f\n", x, ans);
printf("\n"); 
} 
return 0;
}

#include<stdio.h>

int main(){
    double C,F;  
    while (scanf("%lf",&C)!=EOF){
        F=9.0/5*C+32;
        printf("摄氏度=%.2f，华氏度%。2f\n",C,F);
    } 
    return 0;   
}

#include <stdio.h>
#include <math.h>

int main() {
    double a, b, c, s, area;
   
    while (scanf("%lf%lf%lf", &a, &b, &c) != EOF) {
        
        s = (a + b + c) / 2.0;
      
        area = sqrt(s * (s - a) * (s - b) * (s - c));
       
        printf("a = %.0f, b = %.0f, c = %.0f, area = %.3f\n", a, b, c, area);
    }
    return 0;
}