Simplest code for Gauss Elimination
100 % working

#include
#include
#include
#include


int main()
{
clrscr();
float a[20][20],x[20],t,sum;
int i,j,k,n;
cout<<"Enter no: of unknowns:\n\t";
cin>>n;
cout<<"\n enter elements of A"<


//scanning
for(i=0;i
 {   cout<<"\n\t";
     for(j=0;j
     cin>>a[i][j];
 }


//traingulaising


for(j=0;j
 for(i=j+1;i
 {  t=a[i][j]/a[j][j];
     for(k=0;k
     {  a[i][k]-=a[j][k]*t;
     }
 }




for(i=0;i<40;i++)
cout<<"=";


//displaying triangulised matrix




cout<<"\n Triangulaised matrix"<
for(i=0;i<40;i++)
cout<<"=";


for(i=0;i
{ cout<<"\n\n";
  for(j=0;j
  {  cout<<<
  }
}


//back sub
for(i=n-1;i>=0;i--)
{
 sum=0;
 for(j=i+1;j
  sum+=a[i][j]*x[j];
  x[i]=(a[i][n]-sum)/a[i][i];
  }
cout<<"\n";
  for(i=0;i<40;i++)
cout<<"=";




cout<<"\n\t Result"<
for(i=0;i
cout<<


getch();
return 1;
}