C ++程序可在一个变量中求解任何线性方程
一个变量中的任何线性方程均具有aX+b=cX+d的形式。当给出a，b，c，d的值时，可以找到X的值。
解决一个变量中的线性方程的程序如下-
示例
#include<iostream>
using namespace std;
int main() {
float a, b, c, d, X;
cout<<"The form of the linear equation in one variable is: aX + b = cX + d"<<endl;
cout<<"Enter the values of a, b, c, d : "<<endl;
cin>>a>>b>>c>>d;
cout<<"The equation is "<<a<<"X + "<<b<<" = "<<c<<"X + "<<d<<endl;
if(a==c && b==d)
cout<<"There are infinite solutions possible for this equation"<<endl;
else if(a==c)
cout<<"This is a wrong equation"<<endl;
else {
X = (d-b)/(a-c);
cout<<"The value of X = "<< X <<endl;
}
}输出结果
上面程序的输出如下
The form of the linear equation in one variable is: aX + b = cX + d Enter the values of a, b, c, d : The equation is 5X + 3 = 4X + 9 The value of X = 6
在上述程序中，首先由用户输入a，b，c和d的值。然后显示方程式。这在下面给出-
cout<<"The form of the linear equation in one variable is: aX + b = cX + d"<<endl; cout<<"Enter the values of a, b, c, d : "<<endl; cin>>a>>b>>c>>d; cout<<"The equation is "<<a<<"X + "<<b<<" = "<<c<<"X + "<<d<<endl;
如果a等于c且b等于d，则方程有无限解。如果a等于c，则该方程式是错误的。否则，将计算并打印X的值。这在下面给出-
if(a==c && b==d)
cout<<"There are infinite solutions possible for this equation"<<endl;
else if(a==c)
cout<<"This is a wrong equation"<<endl;
else {
X = (d-b)/(a-c);
cout<<"The value of X = "<< X <<endl;
}