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#define PRO 1 #if PRO==1 #include<stdio.h> #include<math.h> #include<stdlib.h> double fa(int ia,int ib,int ic,int id) { ia-=ic; ib-=id; return sqrt(0.0+ia*ia+ib*ib); } int main() { int ia,ib,ic,id; while(scanf("%d %d %d %d",&ia,&ib,&ic,&id)!=EOF) { printf("%lf\n",fa(ia,ib,ic,id)); } system("pause"); } #endif #if PRO==2 #include<stdio.h> #include<math.h> #include<stdlib.h> int main() { double da; while(scanf("%lf",&da)!=EOF) { printf("%.3lf\n",floor(da*1000+0.5)/1000.0); } system("pause"); } #endif #if PRO==3 #include<stdio.h> #include<stdlib.h> int main() { int ia; while(scanf("%d",&ia)!=EOF) { switch(ia) { case -2147483647 ... 24: printf("not a strong wind"); break; case 25 ... 38: printf("strong wind"); break; case 39 ... 54: printf("gale"); break; case 55 ... 72: printf("whole gale"); break; case 73 ... 2147483647: printf("hurricane"); break; } printf("\n"); } system("pause"); } #endif #if PRO==4 #include<stdio.h> #include<stdlib.h> int main() { char ca; while(scanf("%c",&ca)!=EOF) { if(ca==10)continue; if('a'<=ca && ca<='z')ca-=32; switch(ca) { case 'B': printf("Battleship"); break; case 'C': printf("Cruiser"); break; case 'D': printf("Destoryer"); break; case 'F': printf("Frigate"); break; default: printf("你輸入錯了喔"); break; } printf("\n"); } system("pause"); } #endif