题解 | #三角形判断#
三角形判断
http://www.nowcoder.com/practice/689ec1e742394e09b1059556fc167b65
#include<stdio.h> int main() { int a,b,c; while(scanf("%d%d%d",&a,&b,&c) != EOF) { if(a + b > c && a + c > b && b + c > a) //判断三角形,任意两边之和大于第三边 { if(a == b && b == c) //两边相等 { printf("Equilateral triangle!\n"); } else if(((a == b) && a != c) || ((b == c) && b != a) || ((a == c) && a != b)) { //等腰三角形,两边相等且第三边不等 printf("Isosceles triangle!\n"); } else { printf("Ordinary triangle!\n"); } } else printf("Not a triangle!\n"); } return 0; }