若输入3、4、5,程序的输出结果为【 】。 include "math.h" main () { float a,
若输入3、4、5,程序的输出结果为【 】。 include "math.h" main () { float a, b, c, s, area; scanf("%f,%f,%f",&a,&b,&c); s=1.0/2*(a+b+c); area=sqrt (s* (s-a) * (s-b) * (s-c)); printf ("a=%7.2f,b=%7.2f, c=%7.2f, s=%7.2f", a,b, c, s); printf ("area=%7.2f\n", area); }