pat1073. Scientific Notation (20)

1073. Scientific Notation (20) time limit MS Memory limit 65536 KB code length limit 16000 B procedure StandardAuthor Hou, qiming

Scientific notation is the the-the-by-scientists easily handle very large numbers or very small numbers. The notation matches the regular expression [+-][1-9] "." [0-9]+e[+-][0-9]+ which means that the integer portion have exactly one digit, there is at least one digit in the Fractiona L portion, and the number and its exponent ' s signs is always provided even when they is positive.

Now given a real number a in scientific notation, you is supposed to print a in the conventional notation while keeping a ll the significant figures.

Input Specification:

Each input file contains the one test case. There is one line containing the real number A in scientific notation. The number is no further than 9999 bytes in length and the exponent ' s absolute value are no more than 9999.

Output Specification:

For each test case, print on one line the input number A in the conventional notation, with all the significant figures ke PT, including trailing zeros,

Sample Input 1:

+1.23400E-03

Sample Output 1:

0.00123400

Sample Input 2:

-1.2E+10

Sample Output 2:

-12000000000

Submit Code

Scientific counting method.

1#include <cstdio>2#include <stack>3#include <algorithm>4#include <iostream>5#include <stack>6#include <Set>7#include <map>8 using namespacestd;9 stringTransstrings) {Ten     intI=1; One      while(I<s.length ()) {//Effective digits A         if(s[i]=='E'){ -              Break; -         } thei++; -     } -     intIndex=++i;//exponential sign bit -  +     //cout<<index<<endl; -  +i++;//Index Start A     intexp=0; at     //determine the index -      while(I<s.length () &&s[i]=='0'){//Remove top 0 -i++; -     } -  -     //cout<<i<<endl; in  -      while(I<s.length ()) {//exponential calculation toexp*=Ten; +exp+=s[i]-'0'; -i++; the     } *  $     //cout<<exp<<endl;Panax Notoginseng  -     stringSS; the     if(s[index]=='-'){ +i=exp-1; Ass="0."; the          while(i) { +i--; -ss=ss+'0'; $         } $ss=ss+s[1]; -          for(i=3; s[i]!='E'; i++){ -ss=ss+S[i]; the         } -     }Wuyi     Else{// thess=s[1]; -          for(i=3; s[i]!='E'&&exp;i++,exp--){ Wuss=ss+S[i]; -         } About         if(s[i]=='E'){ $              while(exp) { -ss=ss+'0'; -exp--; -             } A         } +         Else{ thess=ss+'.'; -              while(s[i]!='E'){ $ss=ss+S[i]; thei++; the             } the         } the     } -     if(s[0]=='-'){ inss='-'+SS; the     } the     returnSS; About } the intMain () { the     //freopen ("D:\\input.txt", "R", stdin); the     strings; +Cin>>s; -     //cout<<s<<endl; theCout<<trans (s) <<Endl;Bayi     return 0; the}

pat1073. Scientific Notation (20)