字符串的展开

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NOIP2007复赛 提高组 第二题

#include<stdio.h>#include<stdlib.h>char A[100];int P = 0;void hanshu(char *a, int p1, int p2, int p3){int i = 0;char x, y;while (a[i]){if (a[i] == '-'){x = a[i - 1];y = a[i + 1];if ((y - x) == 1)//相邻{A[P++] = '\0';}else if ((y - x) <= 0)//小{A[P++] = '-';A[P++] = '\0';}else {                   //大if (p1 == 3)         //填充星星{for (int i = 1; i <= (p2*(y - x - 1)); i++){A[P++] = '*';}A[P++] = '\0';}else{if (x <= '9'&&y <= '9'&&x >= '0'&&y >= '0')//数字{if (p3 == 1)                   //顺序输出{for (int i = 1; i <= (y - x - 1); i++){for (int j = 1; j <= p2; j++){A[P++] = x + i;}}A[P++] = '\0';}if (p3 == 2)                          //逆序输出{for (int i = 1; i <= (y - x - 1); i++){for (int j = 1; j <= p2; j++){A[P++] = y - i;}}A[P++] = '\0';}}else                                     //字母{if (p1 == 1 && p3 == 1)           //小写 顺序输出{for (int i = 1; i <= (y - x - 1); i++){for (int j = 1; j <= p2; j++){if (x < 'a')  //本身是大写{A[P++] = x + i + 32;}else        //本身小写{A[P++] = x + i;}}}A[P++] = '\0';}if (p1 == 2 && p3 == 1)             //大写 顺序输出{for (int i = 1; i <= (y - x - 1); i++){for (int j = 1; j <= p2; j++){if (x < 'a')  //本身是大写{A[P++] = x + i;}else        //本身小写{A[P++] = x + i - 32;}}}A[P++] = '\0';}if (p1 == 1 && p3 == 2)                   //小写 逆序输出{for (int i = 1; i <= (y - x - 1); i++){for (int j = 1; j <= p2; j++){if (x < 'a')     //本身大写{A[P++] = y - i + 32;}else              //本身小写{A[P++] = y - i;}}}A[P++] = '\0';}if (p1 == 2 && p3 == 2)                     //大写 逆序输出{for (int i = 1; i <= (y - x - 1); i++){for (int j = 1; j <= p2; j++){if (x < 'a')     //本身大写{A[P++] = y - i;}else              //本身小写{A[P++] = y - i - 32;}}}A[P++] = '\0';}}}}}i++;}}void main(){int p1 = 0, p2 = 0, p3 = 0;char a[100];for (int i = 0; i < 100; i++)A[i] = 0;scanf("%d%d%d", &p1, &p2, &p3);scanf("%s", &a);hanshu(a, p1, p2, p3);int i = 0;P = 0;while (a[i]){if (a[i] == '-'){while (A[P]){printf("%c", A[P]);P++;}P++;}else{printf("%c", a[i]);}i++;}}