sicily 1177. Take Your Vitamins

1177. Take Your Vitamins

Constraints

Time Limit: 1 secs, Memory Limit: 32 MB

Description

Write a program to help prepare these nutritional labels by computing that percentage from the information on the amount present in one serving and the amount constituting the minimum daily requirement.

Input

Input consists of one or more lines, each of the form:

A U R V

where A is the amount of a vitamin/mineral present in one serving of the food product,U is the units in which A is measured,R is the minimum daily requirement for that vitamin/mineral, measured in the same units asA , and V is the name of that vitamin/mineral.A and R will be floating point numbers.U will be a string of alphabetic characters withno embedded spaces. V will be a string of characters,possibly including spaces. A , U , R , andV will be separated from one another by exactly one space, andV is terminated by the end of the input line. End of the input is signaled by a line in whichA is negative.

Output

For each line of input data, your program should determine the percentage of the recommended daily requirement being provided for that vitamin/mineral. If it is at least1% , your program should print a line of the form

V A U P %

where V , A , andU are the quantities from the input, and P is the percentage of the minimum daily requirement represented by the amountA .

V should be printed left-justified on the line.A should be printed with 1 digit precision, andP with zero digits precision.V , A , U , and P should be separated by one space each.

After the last such line, your program should print a line stating

Provides no significant amount of:

followed by a list of the names of all vitamins/minerals which are provided as less than1% of the minimum daily requirement. These should be printed one name per line, in the order they occurred within the input.

Sample Input

3500.0 iu 5000.0 Vitamin A 60.0 mg 60.0 Vitamin C 0.15 g 25.0 Fiber 109. mg 990. Phosphorus 0.0 mg 1000.0 Calcium 25.0 mg 20.0 Niacin -1.0 x 0.0 x

Sample Output

Vitamin A 3500.0 iu 70% Vitamin C 60.0 mg 100% Phosphorus 109.0 mg 11% Niacin 25.0 mg 125% Provides no significant amount of: Fiber Calcium

题目分析

简单的模拟题,耐心读懂题目即可

注意读入的数据可能省略了小数点后的数字,可以直接在末尾补零

注意打印时的精度要求

用int强转会丢失所以小数部分,用setprecision才能四舍五入保存

#include <iostream>#include <sstream>#include <iomanip>struct Vita {  std::string name;  double take;  std::string units;  double percent;};double todouble(std::string str) {  std::stringstream s(str);  double value;  s >> value;  return value;}int main(){  std::string _take, _units, _need, _name;  double took, _percent;  std::string line;  Vita vitamins[1000];  int count = 0;  std::string notok = "";  while (getline(std::cin, line)) {    _take = _units = _need = _name = "";    int index;    for (index=0; line[index]!=' '; ++index)      _take = _take + line[index];    _take = _take + '0';    took = todouble(_take);    if (took < 0)      break;    for (index++; line[index]!=' '; ++index)      _units = _units + line[index];    for (index++; line[index]!=' '; ++index)      _need = _need + line[index];    _need = _need + '0';    for (index++; index!=line.length(); ++index)      _name = _name + line[index];    _percent = took / todouble(_need);    if (_percent < 0.01) {      notok = notok + _name + '\n';    } else {      vitamins[count].name = _name;      vitamins[count].take = took;      vitamins[count].units = _units;      vitamins[count].percent = _percent;      count++;    }  }  for (int i = 0; i < count; ++i) {    std::cout << vitamins[i].name << " "                    << std::fixed << std::setprecision(1) << vitamins[i].take << " "                    << vitamins[i].units << " "                   << std::fixed << std::setprecision(0) << vitamins[i].percent*100                   << "%" << std::endl;  }  std::cout << "Provides no significant amount of:" << std::endl << notok;}