c语言,判断能否构成三角形?#include int main(){float a,b,c,s;printf("please input three numbers a,b,c:");scanf("%f%f%f",&a,&b,&c);if(a+b>c&&a+c>b&&b+c>a){s = 1/2*(a+b+c);printf("area = %f\n",s);}elseprintf("不能构成三角形\n");return 0
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