windows API 计算器

#include "stack.h" int CurValue(char x) { switch(x) { case '+': case '-': return 1; case '*': case '/': return 3; case 's': case 'c': return 5; case '(': return 7; case ')': return 0; } return 0; } int PreValue(char x) { switch(x) { case '+': case '-': return 2; case '*': case '/': return 4; case 's': case 'c': return 6; case '(': return 0; case '#': return -1; } return 0; } bool IsDigtial(char x) { if(('0' <= x && x <= '9') || x == '.') return true; else return false; } bool IsDoubleOpe(char x) { switch(x) { case '+': case '-': case '*': case '/': return true; default : return false; } } double Calculate(double n1,double n2,char op) { switch(op) { case '+': return n2 + n1; case '-': return n2 - n1; case '*': return n2*n1; case '/': return n2/n1; } return 0; } double Transform(char *ch) { STACK <double>st1; STACK <char>st2; int i=0; int la=0; int n1 = 0; char op; double num=0,z=0.1,f1,f2,n; st2.Push ('#'); while(ch[i] != '\0') { while(IsDigtial(ch[i])) { if(ch[i] == '.') { la = 1; } else { if(la == 1) { num = num + (ch[i] - '0')*z; z = z/10; } else { num = num * 10 + (ch[i]-'0'); } } i++; } if(ch[i] != '(' && ch[i] != 's' && ch[i] != 'c' && ch[i-1] != ')') { st1.Push (num); } if(ch[i] == '(' && IsDigtial(ch[i-1])) { st1.Push (num); st2.Push('*'); } if(ch[i] == ')' && IsDigtial(ch[i+1])) { n1 = 1; } if(ch[i] == '\0') { break; } if(PreValue(st2.Get() ) < CurValue(ch[i])) { st2.Push (ch[i]); if(ch[i] == 's' || ch[i] == 'c') { i = i+3; } else i++; } else { while(PreValue(st2.Get() ) > CurValue(ch[i])) { if(IsDoubleOpe(st2.Get ())) { f1 = st1.Pop (); f2 = st1.Pop (); op = st2.Pop (); n = Calculate(f1,f2,op); } else { f1 = st1.Pop (); op = st2.Pop (); if(op == 'c') n = cos(f1); else n = sin(f1); } st1.Push (n); } if(PreValue(st2.Get ()) == CurValue(ch[i])) { i++; st2.Pop (); } else { st2.Push (ch[i]); if(ch[i] == 's' || ch[i] == 'c') i = i + 3; else i++; } } if(n1 == 1) { st2.Push('*'); n1 = 0; } la = 0; num = 0; z = 0.1; } op = st2.Pop (); while(op != '#') { if(IsDoubleOpe(op)) { f1 = st1.Pop (); f2 = st1.Pop (); n = Calculate(f1,f2,op); } else { f1 = st1.Pop (); if(op == 'c') n = cos(f1); else { n = sin(f1); } } st1.Push (n); op = st2.Pop (); } num = st1.Pop (); return num; } void TenToOthers(char *strToTrans,char*an,int unit) { int n,f1,f2,temp; int la = 0,num1 = 0,num2 = 0,t=1; double num = 0; STACK <int>stack1; STACK <int>stack2; CharToInt(strToTrans,&num1,&num2,&t); while(num1 != 0) { f1 = num1/unit; f2 = num1%unit; stack1.Push(f2); num1 = f1; }//整数部分处理 for(n=0;n<10;n++) { num2 = num2*unit; f1 = num2/t; f2 = num2%t; stack2.Push(f1); num2 = f2; }//小数部分处理 n = 0; while(!stack1.IsEmpty()) { temp = stack1.Pop(); if(temp < 10 ) { an[n] = temp + '0'; n++; } else { an[n] = (temp - 10) + 'A'; n++; } }//整数部分处理 an[n++] = '.'; num1 = 0; while(num1<=stack2.GetLength()) { if(stack2.GetI(num1) < 10 ) { an[n] = stack2.GetI(num1) + '0'; n++; } else { an[n] = (stack2.GetI(num1) - 10) + 'A'; n++; } num1++; }//小数部分处理 an[n] = '\0'; } void TwoToTen(char *ch1,char *an) { int n,temp; int la = 0,t=1; double z = 0.5; double num = 0; STACK <int>stack1; for(n=0;ch1[n] != '\0';n++) { if(ch1[n] == '.') la = 1; else { if(la == 1) { num = num + (ch1[n] - '0')*z; z = z/2; } else { temp = ch1[n] - '0'; stack1.Push(temp); } } } while(!stack1.IsEmpty()) { num = num + stack1.Pop() * t; t = t*2; } sprintf(an,"%lf",num); } int IsError(char *ch) { if(strcmp(ch,"") == 0) return 1; int i=0,count1=0,count2=0; char op; STACK <char>st2; st2.Push('#'); while(ch[i] != '\0') { if(ch[i] == '(') { if(ch[i+1] == ')') return 4; else count2++; } if(ch[i] == ')') { if(count2 <= 0) return 3; else count2--; } i++; } if(count2 != 0) return 3; i = 0; while(ch[i] != '\0') { while(IsDigtial(ch[i])) { i++; } if(ch[i] != '(' && ch[i] != 's' && ch[i] != 'c' && ch[i-1] != ')') count1++; if(ch[i] == '\0') { break; } if(PreValue(st2.Get() ) < CurValue(ch[i])) { st2.Push (ch[i]); if(ch[i] == 's' || ch[i] == 'c') { i = i+3; } else i++; } else { while(PreValue(st2.Get() ) > CurValue(ch[i])) { if(IsDoubleOpe(st2.Pop ())) { if(count1 >= 2) count1--; else return 2; } else { if(count1 < 1) return 2; } } if(PreValue(st2.Get ()) == CurValue(ch[i])) { i++; st2.Pop (); } else { st2.Push (ch[i]); if(ch[i] == 's' || ch[i] == 'c') i = i + 3; else i++; } } } op = st2.Pop (); while(op != '#') { if(IsDoubleOpe(op)) { if(count1 >= 2) count1--; else return 2; } else { if(count1 < 1) return 2; } op = st2.Pop (); } return 0; } void CharToInt(char *strToTrans,int *num1, int *num2,int *t) { int n,la; for(n=0;strToTrans[n]!='\0';n++) { if(strToTrans[n] == '.') { la = 1; } else { if(la == 1) { *num2 = *num2*10 + (strToTrans[n] - '0'); *t = *t*10; } else { *num1 = *num1*10 + (strToTrans[n] - '0'); } } } } /*void CharToDouble(char *strToTrans) { }*/