# include & ltstdio.h & gt

void main()

{

int a= 1，b=4，c = 2；

float x= 10.5，y=4.0，z；

z =(a+b)/c+sqrt((double)y)* 1.2/c+x；

//The square root of z = (1+4)/2+4.0 is 2.000000 *1.2/2+10.5.

// (1+4)/2 Because they are all plastic, they will be truncated, and the result of that part is: 2.

//2+1.20000+10.500000 So the answer is 13.7000. ...

printf("%f\n "，z)；

}