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

include <stdio.h>

include <stdlib.h>

int main(){
float a,b,c;
while(scanf("%f%f%f",&a,&b,&c)!=EOF){
if(a<b+c && b<a+c && c<a+b)
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)