C语言作业1

include<stdio.h>

include<stdlib.h>

int main()
{
printf(" 0\n");
printf("\n");
printf("I I\n");
printf(" 0\n");
printf("\n");
printf("I I\n");
system("pause");
return 0;
}

include<stdio.h>

include<stdlib.h>

int main()
{
printf(" 0\t 0\n");
printf("\t\n");
printf("I I\tI I\n");
system("pause");
return 0;
}

include<stdio.h>

include<stdlib.h>

int main()
{
float a,b,c;
scanf("%f%f%f",&a,&b,&c);
if((a+b>c)&&(a+c>b)&&(b+c>a))
printf("能构成三角形\n");
else
printf("不能构成三角形\n");
system("pause");
return 0;
}

include <stdio.h>

include<stdlib.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");
system("pause");
return 0;
}

include<stdio.h>

include<stdlib.h>

int main()
{
double A,B;
char c1,c2,c3,c4,c5;
int a1,a2,a3;

scanf_s("%d%d%d",&a1,&a2,&a3);
printf("a1=%d,a2=%d,a3=%d\n",a1,a2,a3);
getchar();
scanf_s("%c%c%c%c%c",&c1,&c4,&c2,&c5,&c3);
printf("c1=%c,c2=%c,c3=%c\n",c1,c2,c3);
getchar();
scanf_s("%lf%lf",&A,&B);<details>
printf("A=%lf,B=%lf\n",A,B);
system("pause");
return 0;

}

include <stdio.h>

include<math.h>

include<stdlib.h>

int main()
{
int year;
double second;
second = pow(10,9);
year=second/60/60/24/365+0.5;
printf("10亿秒约等于%d年\n", year);
system("pause");
return 0;
}
}

include <stdio.h>

include <math.h>

include<stdlib.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);}
system("pause");
return 0;
}

include<stdio.h>

include<stdlib.h>

int main()
{
float F,C;
while((scanf("%f",&C))!=EOF)
{F=9*C/5+32;
printf("摄氏度c = %.2f时，华氏度f = %.2f\n",C,F);}
system("pause");
return 0;
}

include<stdio.h>

include<math.h>

include<stdlib.h>

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

}