program invers matriks dengan c/c++

#include <stdio.h>
 void main(){

 int a[5][5];
 int i,j,x,y,det,hasil;

printf("masukkan jumlah kolom matriks : ");scanf("%d",&x);
printf("masukkan jumlah baris matriks : ");scanf("%d",&y);

for (i=0;i<2;i++){
for (j=0;j<2;j++){

printf("masukkan elemen %d %d : ",i+1,j+1);scanf("%d",&a[i][j]);

}
}

for (i=0;i<2;i++){
for (j=0;j<2;j++){

printf("%d ",a[i][j]);
}
printf("\n ");
}

det = (a[1][1]*a[2][2]-a[2][1]*a[1][2]);
while(hasil !=0)
 hasil = 1/det;

  a[1][1] = hasil*a[2][2];
  a[1][2] = hasil*a[2][1];
  a[2][1] = hasil*a[1][2];
  a[1][2] = hasil*a[1][1];


  printf("invers matriks \n");
  for (i=0;i<2;i++){
  for (j=0;j<2;j++){

printf("%d ",a[i][j]);
}

printf("\n ");
}

 }