uva537 - Artificial Intelligence?

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/********************** * Author:FISTY * DATA:2014-12-2 * string * uva 537 * ******************/#include <cstdio>#include <cstring>#include <algorithm>#include <cstdlib>#include <math.h>#include <ctype.h>using namespace std;#define MAX_N 100double cover(char s, double a){        if(s == 'k'){                a *= 1000;        }else if(s == 'M'){                a *= 1000000;        }else{                if(s == 'm'){                        a *= 0.001;                }        }        return a;}       int main(){        int n;        int kcase = 0;        scanf("%d", &n);        char c = getchar();        while(n--){                char str[MAX_N];//存放原字符串                char strU[MAX_N], strI[MAX_N],strP[MAX_N];// 存放值                gets(str);                                printf("Problem #%d\n", ++kcase);                int u = 0,ii = 0,p = 0;                for(int i = 0;i < strlen(str); i++){                        if(str[i] == 'U' && str[i+1] == '='){                                u = 1;                                int cnt = 0;   //str1的下标                                char *q = strstr(str, "U="); // 得到U=首地址                                for(int j = q-str+2; str[j] != 'V'; j++){                                        strU[cnt++] = str[j];                                 }                                strU[cnt] = '\0';                                //for(int k = 0;k < strlen(strU); k++)                                //        putchar(strU[k]);                        }else if(str[i] == 'I' && str[i+1] == '='){                                ii = 1;                                int cnt = 0;   //str1的下标                                char *q = strstr(str+2, "I="); // 得到U=首地址                                for(int j = q-str+2; str[j] != 'A'; j++){                                        strI[cnt++] = str[j];                                }                                strI[cnt] = '\0';                                                        }else if(str[i] == 'P' && str[i+1] == '='){                                p = 1;                                int cnt = 0;   //str1的下标                                char *q = strstr(str, "P="); // 得到U=首地址                                for(int j = q-str+2; str[j] != 'W'; j++){                                        strP[cnt++] = str[j];                                }                                strP[cnt] = '\0';                                                        }else{                                continue;                        }                }                if(u && ii){                        //求P                        double U,I;                        int U_len = strlen(strU);                        int I_len = strlen(strI);                        //U                        U = atof(strU);                        U = cover(strU[U_len-1], U);                        //I                        I = atof(strI);                        I = cover(strI[I_len-1],I);                        printf("P=%.2lfW\n", U*I);                }else if(u && p){                        //求I                        double P,U;                        int U_len = strlen(strU);                        int P_len = strlen(strP);                        U = atof(strU);                        U = cover(strU[U_len-1],U);                        P = atof(strP);                        P = cover(strP[P_len-1], P);                        printf("I=%.2lfA\n", P/U);                }else {                        if(ii && p){                        //求U                        double I,P;                        int I_len = strlen(strI);                        int P_len = strlen(strP);                        I = atof(strI);                        I = cover(strI[I_len-1], I);                        P = atof(strP);                        P = cover(strP[P_len-1], P);                        printf("U=%.2lfV\n", P/I);                        }                }                printf("\n");        }        return 0;}
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