C++顺序结构程序

复制纯文本新窗口

1. #include <iostream>
2. #include <cmath> //由于程序要用到数学函数sqrt,故应包含头文件cmath
3. using namespace std;
4. int main( )
5. {
6. float a,b,c,x1,x2;
7. cin>>a>>b>>c;
8. x1=(-b+sqrt(b*b-4*a*c))/(2*a);
9. x2=(-b-sqrt(b*b-4*a*c))/(2*a);
10. cout<<"x1="<<x1<<endl;
11. cout<<"x2="<<x2<<endl;
12. return 0;
13. }

#include <iostream>
#include <cmath>  //由于程序要用到数学函数sqrt,故应包含头文件cmath
using namespace std;
int main( )
{
  float  a,b,c,x1,x2;
  cin>>a>>b>>c;
  x1=(-b+sqrt(b*b-4*a*c))/(2*a);
  x2=(-b-sqrt(b*b-4*a*c))/(2*a);
  cout<<"x1="<<x1<<endl;
  cout<<"x2="<<x2<<endl;
  return 0;
}