C语言做的细胞生命游戏

#include <iostream> using namespace std; #define N 2010 char a[N], b[N], c[N]; inline void Print(int t, char b) { if(t>=4 || t<=1) putchar('0'); else if(t==3) putchar('1'); else putchar(b); } int main() { int y, x, i, j, t; char *pa, *pb, *pc, *pt; a[0]=b[0]=c[0]='0'; while(scanf("%d%d", &y, &x)!=EOF) { getchar(); gets(a+1); gets(b+1); a[x+1]=b[x+1]='0'; pa=a; pb=b; pc=c; // row 1 for(j=1; j<=x; ++j) { /** row 0 has all zeros a is row 1 --- the row we are working on b is row 2 */ t = -240 + a[j-1] + a[j+1] + b[j-1] + b[j] + b[j+1]; Print(t, a[j]); } putchar('\n'); // row 2 to y-1 for(i=2; i<y; ++i) { /** bug here: always read in new info into buffer c and that is not what i want. gets(c+1); c[x+1]='0'; */ gets(pc+1); pc[x+1]='0'; /** pa points to row i-1 pb points to row i --- the row we are working on c is row i+1 */ for(j=1; j<=x; ++j) { t = -384 + pa[j-1] + pa[j] + pa[j+1] + pb[j-1] + pb[j+1] + pc[j-1] + pc[j] + pc[j+1]; Print(t, pb[j]); } putchar('\n'); /** bug here: after serveral runs, pa, pb, pc all points to c pa=pb; pb=c; */ pt=pa; pa=pb; pb=pc; pc=pt; } // row y for(j=1; j<=x; ++j) { /** pa points to y-1st row pb points to yth row --- the row we are working on row y+1 has all zeros */ t = -240 + pa[j-1] + pa[j] + pa[j+1] + pb[j-1] + pb[j+1]; Print(t, pb[j]); } putchar('\n'); } return 0; }