Create II.cpp

II.cpp

@@ -0,0 +1,105 @@
+#include <iostream>
+#include <cstdio>
+#include <cstring>
+#include <algorithm>
+#include <cstdlib>
+#define endl '\n'
+
+using namespace std;
+
+const int MAXN = 105;
+
+char str[MAXN];
+
+int main()
+{
+	while(scanf("%s",str) == 1)
+	{
+		int i = 0,mark1 = -1,mark2,f1,f2,f3;
+
+		f1 = 1,f2 = 1,f3 = 1;
+
+		while((str[i] > '9' || str[i] <= '0'))
+		{
+			if(str[i] == '-')
+			{
+				i++;
+				continue;
+			}
+			if(str[i] == '.')
+			{
+				mark1 = i;
+				break;
+			}
+			if(str[i] == 'e')
+			{
+				mark2 = i;
+				break;
+			} 
+			str[i] = -1;
+			i++;
+		}
+
+		if(str[i] <= '9' && str[i] > '0')
+		{
+			f3 = 0;
+		}
+
+		while(str[i] != 'e')
+		{
+			if(str[i] == '.')mark1 = i;
+			i++;
+		}
+		mark2 = i;
+		//cout << str[mark2] << endl;
+
+		//cout << mark1 << endl;
+		int j;
+		for(j = i - 1;j > mark1 && mark1 != -1;j--)
+		{
+			if(str[j] > '0' && str[j] <= '9')
+			{
+				f2 = 0;
+				break;
+			}
+			str[j] = -1;
+		}
+		if(f2 && !f3)str[mark1] = -1;
+
+
+		int l = strlen(str) - 1;
+		for(i = mark2 + 1;str[i];i++)
+		{
+			if(str[i] == '+')
+			{
+				str[i] = -1;
+				continue;
+			}
+			if(str[i] == '0' && f1)
+			{
+				str[i] = -1;
+				continue;
+			}
+			if(str[i] > '0' && str[i] <= '9')
+			{
+				f1 = 0;
+				break;
+			}
+		}
+
+		int f4 = 0,f5 = 1;
+		//cout << f3 << endl; 
+		if(f3)cout << 0;
+		for(i = 0;str[i];i++)
+		{
+			if(str[i] == -1)continue;
+			if(str[i] == '.')f4 = 1;
+			if(f4 && str[i] >= '0' && str[i] <= '9')f5 = 0;
+			if(str[i] == 'e' && f4 && f5)cout << 0;
+			cout << str[i];
+		}
+		if(f1)cout << 0;
+		cout << '\n';
+	}
+	return 0;
+}