What is artificial intelligence?

Question link: http://uva.onlinejudge.org/index.php? Option = com_onlinejudge & Itemid = 8 & page = show_problem & problem = 478

Question: It's really frustrating. This question has been done for a long time. The meaning of tat is very simple. It is to describe any two of the voltage U current I power P in a language and find another one.

String Conversion and unit judgment. It's not difficult. It's always in WA. It's just because the header file uses cstdio, and stdio. h is used to restore to normal. It's really, it's just !!!!

Code:

#include <iostream>#include <stdio.h>using namespace std;char s[1000];char *getnum(char *p,double &ans){    ans = 0;    while(*p >= '0' && *p <= '9')    {        ans = *p - '0' + ans * 10;        p++;    }    if(*p == '.')    {        p++;        double quan = 0.1;        while(*p >= '0' && *p <= '9')        {            ans = ans + quan * (*p - '0');            quan *= 0.1;            p++;        }    }    return p;}int main(){    int N;    cin >> N;    cin.get();    double u,i,ap;    bool bu,bi,bp;    int no = 1;    while(N--)    {        cin.getline(s,1000);        char *p = s;        bu = 0;        bi = 0;        bp = 0;        while(*p != '\0')        {            if(*p == '=')            {                if(*(p - 1) == 'u' || *(p - 1) == 'U')                {                    bu = 1;                    p++;                    if(*p >= '0' && *p <= '9')                        p = getnum(p,u);                    if(*p == 'm')                        u *= 0.001;                    if(*p == 'k')                        u *= 1000;                    if(*p == 'M')                        u *= 1000000;                }else if(*(p - 1) == 'i' || *(p - 1) == 'I')                {                    bi = 1;                    p++;                    if(*p >= '0' && *p <= '9')                        p = getnum(p,i);                    if(*p == 'm')                        i *= 0.001;                    if(*p == 'k')                        i *= 1000;                    if(*p == 'M')                        i *= 1000000;                }else if(*(p - 1) == 'p' || *(p - 1) == 'P')                {                    bp = 1;                    p++;                    if(*p >= '0' && *p <= '9')                        p = getnum(p,ap);                    if(*p == 'm')                        ap *= 0.001;                    if(*p == 'k')                        ap *= 1000;                    if(*p == 'M')                        ap *= 1000000;                }            }            p++;        }        cout << "Problem #" << no++ << endl;        if(bu && bi)            printf("P=%.2lfW\n",u * i);        else if(bp && bi)            printf("U=%.2lfV\n",ap / i);        else if(bu && bp)            printf("I=%.2lfA\n",ap / u);        cout << endl;    }    return 0;}

Dream code: http://www.hypo.xyz

What is artificial intelligence?