#include<stdio.h>
#include<math.h>
int main()
{
char a,b,c;
float s,area;
getchar(a);
getchar(b);
getchar(c);
area=sqrt(s*(s-a)*(s-b)*(s-c));
putchar(area);
putchar('\n');
return 0;
}
C language: Calculate the area of a triangle given three sides
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Origin blog.csdn.net/m0_64854963/article/details/122046869
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