最新3高斯列主元消去法汇总

3高斯列主元消去法

3.高斯列主元消去法,求解其次线性方程组C/C++ code

for(k=i;k

a[j][k]+=a[i][k]*tmp;

}

}

x[n-1]=b[n-1]/a[n-1][n-1];

for(i=n-2;i>=0;i--)

{ x[i]=b[i];

for(j=i+1;j

x[i]-=a[i][j]*x[j];

x[i]/=a[i][i];

}

for(i=0;i

printf("Answer:\n x[%d]=%f\n",i,x[i]);

getch();

return0;

}

#include

#include

#define NUMBER 20

#define Esc 0x1b

#define Enter 0x0d

float A[NUMBER][NUMBER+1] ,ark;

int flag,n;

exchange(int r,int k);

float max(int k);

message();

main()

{

float x[NUMBER];

int r,k,i,j;

char celect;

clrscr();

printf("\n\nUse Gauss.");

printf("\n\n1.Jie please press Enter."); printf("\n\n2.Exit press Esc.");

celect=getch();

if(celect==Esc)

exit(0);

printf("\n\n input n=");