UVA 748 (暑假-高精度-C-Exponentiation)

#include <stdio.h>#include <string.h>#include <stdlib.h>const int Max = 1000;int main () {char str_1[Max];// str_2[Max];memset(str_1, 0, 1000);//memset(str_2, 0, 1000);int n;while (scanf("%s%d", str_1, &n) != EOF) {//printf("%s %d\n", str_1, n);int kong = 0;int count = 0;ints[2*Max] = {0};int arr_1[Max] = {0}, arr_2[Max] = {0};int len_1 = strlen(str_1);//int len_2 = strlen(str_2);int i, j, m;for (i = 0,j = 0; i < len_1; i++)   //?????,???????if ( str_1[len_1 - i - 1] == '.')kong = i; //printf("i = %d\n", i);elsearr_1[j++] = str_1[len_1 - i - 1] - '0', arr_2[j-1] = arr_1[j-1];//, printf("%d",arr_2[j-1]);//printf("\nkong = %d\n", kong);kong = kong * n;//printf("\nkong = %d\n", kong);//for (int j = 0; j < len_2; j++)//arr_2[j] = str_2[len_2 - j - 1] - '0'; for (m = 1; m < n; m++) {for (i = 0; i < Max; i++)    //??for (j = 0; j < Max; j++) {s[i+j]= s[i+j] + arr_1[i] * arr_2[j];if (s[i+j] >= 10) {s[i+j+1] += s[i+j] / 10;s[i+j] = s[i+j] % 10; }}//?s[]??????arr_1; for (i = 0; i < Max; i++)arr_1[i] = s[i], s[i] = 0;}//????if (n == 0)             //ÊÇ·ñÊÇ 0´Î·½printf("1");elseif (atof(str_1) == 0)    //ÊÇ·ñ Êý×ÖÊÇ 0printf("0");else if (atof(str_1) == (int) atof(str_1))   //ÊÇ·ñÊÇÕûÊý{if (kong == 0)                    //ÊÇ·ñÓÐСÊýµã{for (i = Max - 1; i >= 0 ; i--) if (arr_1[i] != 0)break;for (; i >= 0; i--) printf("%d", arr_1[i]);}else{for (i = Max - 1; i >= 0 ; i--) {if (i == kong-1)printf(".");if (i < kong-1)printf("0");if (arr_1[i] != 0)break;}for (j=0; i >= j; i--){printf("%d", arr_1[i]);if ( kong == i)break;}}}else {for (i = Max - 1; i >= 0 ; i--){if (i == kong-1)printf(".");if (i < kong-1)printf("0");if (arr_1[i] != 0)break;}j = 0;while (arr_1[j++] == 0){;}for (; i >= j-1; i--) {printf("%d", arr_1[i]);if ( kong == i)printf(".");}}memset(str_1, 0, 1000);//memset(str_2, 0, 1000);printf("\n");}return 0;}/*   int main() {   float n;   int m;   char s[7];   while (scanf("%s%d", s, &m) != EOF ) {   printf("%s %d\n", s, m);   }   return 0;   }   */