sxd.rar_电磁场_电磁场场强

#include "time.h" #include <stdio.h> #include <conio.h> #include <stdlib.h> #include <iostream> #include <algorithm> using namespace std; int main () { int i,j,n,r,x,y; n=0; time_t t; //int a[10]; //for (i=0;i<10;i++) { // a[i]=rand()%4+1; // } int b[10000][2]; srand((unsigned) time(&t)); printf("random swimmed-stop is starting\n"); for (i=0;i<10000;i++) { for (j=0;j<2;j++) { // a[j]=rand()%160; b[i][j]=rand()%10; // printf("%d\n",a[j]); } } /* for (i=0;i<10;i++) { for (j=0;j<2;j++) { // a[j]=rand()%160; printf("%d\n",b[i][j]); } } */ for (i=0;i<10000;i++) { while (b[i][0] != 0 && b[i][0] != 10 && b[i][1] != 0 && b[i][1] != 10) { r = rand()%4+1; if (r == 1) b[i][0]++; if (r == 2) b[i][0] = b[i][0] - 1; if (r == 3) b[i][1] = b[i][1] + 1; if (r == 4) b[i][1] = b[i][1] - 1; } printf("%d %d\n",b[i][0],b[i][1]); } printf("\n over \n***********\n"); printf("You can search now\nPlease input x&&y , just like 3 4:\n"); while(1) { scanf("%d %d",&x,&y); for (i=0,j=0;i<10000;i++) { if(b[i][0] == x) { if(b[i][1] == y) j++; } } printf("%d\n",j); } return 0; }