PROGRAM TO FIND THE SOLUTION OF ALGEBRIC EQUATIONS USING GAUSS-SEIDEL ITERATIVE METHOD

// SHUAIB SARKAR
// PROGRAM TO FIND THE SOLUTION OF
// ALGEBRIC EQUATIONS USING GAUSS-SEIDEL ITERATIVE METHOD

#include"stdio.h"
#include"conio.h"
#include"math.h"
#define FUNCX(y,z) (17-y+2*z)/20
#define FUNCY(x,z) (-18-3*x+z)/20
#define FUNCZ(x,y) (25-2*x+3*y)/20
void main()
{
float x1,y1,z1;
float a,b,c;
float x2,y2,z2;
int itr=1;
clrscr();
printf("\n\t\t\t GAUSS - SEIDEL ITERATION METHOD");
printf("\n\t\t\t=================================\n");
printf("\n\t\t\tValue Of X\t Value of Y\tValue of Z");
printf("\n======================================================");
x1=y1=z1=0;
do
{
a=FUNCX(y1,z1);
x2=x1;
x1=a;
b=FUNCY(x1,z1);
y2=y1;
y1=b;
c=FUNCZ(x1,y1);
z2=z1;
z1=c;
printf("\n Iterration : %d \t %f\t %f\t%f ",itr++,a,b,c);
}while(a!=x2 && b!=y2 && c!=z2);
printf("\n =====================================================");
printf("\n SOLUTION IS : \n\n X = %f \t Y= %f\t Z= %f",a,b,c);
getch();
}