UVa:537 - Artificial Intelligence?
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大概题意是:根据所给文本中已知的P、U、I 中的其中两个量的值,运算出第三个量的值。
#include<stdio.h>#include<string.h>const int MAXS=1000000+10;char s[MAXS],m[MAXS];int main(){ int T; while(scanf("%d",&T)!=EOF){ getchar(); for(int k=1;k<=T;k++){ gets(s); int leng=strlen(s); double P=-1.0, I=-1.0, U=-1.0; for(int i=0;i<leng;i++){ if(s[i]=='P'&&s[i+1]=='='){ memset(m,0,sizeof(m)); int j,t; for(j=i+2,t=0;;j++,t++){ if(!(s[j]>=48&&s[j]<=57||s[j]=='.')) break; m[t]=s[j]; } sscanf(m,"%lf",&P); if(s[j]=='m') P=P*0.001; if(s[j]=='k') P=P*1000; if(s[j]=='M') P=P*1000000; } if(s[i]=='U'&&s[i+1]=='='){ memset(m,0,sizeof(m)); int j,t; for(j=i+2,t=0;;j++,t++){ if(!(s[j]>=48&&s[j]<=57||s[j]=='.')) break; m[t]=s[j]; } sscanf(m,"%lf",&U); if(s[j]=='m') U=U*0.001; if(s[j]=='k') U=U*1000; if(s[j]=='M') U=U*1000000; } if(s[i]=='I'&&s[i+1]=='='){ memset(m,0,sizeof(m)); int j,t; for(j=i+2,t=0;;j++,t++){ if(!(s[j]>=48&&s[j]<=57||s[j]=='.')) break; m[t]=s[j]; } sscanf(m,"%lf",&I); if(s[j]=='m') I=I*0.001; if(s[j]=='k') I=I*1000; if(s[j]=='M') I=I*1000000; } } printf("Problem #%d\n",k); if(P!=-1.0&&I!=-1.0) printf("U=%.2lfV\n",P/I); if(P!=-1.0&&U!=-1.0) printf("I=%.2lfA\n",P/U); if(U!=-1.0&&I!=-1.0) printf("P=%.2lfW\n",U*I); printf("\n"); } } return 0;}
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