There is an exercise which dynamically asks for user input and stores in a vector, but I don't know how to end a string input. The book says it is Ctrl + Z but it doesn't work. I am using visual studio 2019 and I know it should work because when I change the variables for integers it does.
int main(void) {
std::vector<std::string> words;
for (std::string palabras; std::cin >> palabras;)
words.push_back(palabras);
std::string ban = "broccoli";
for (std::string x : words)
if (x == ban) std::cout << "Bleep!" << '\n';
else std::cout << x << '\n';
}
Keep things simple: don't use the return value of std::cin
as the for loop condition, unless you're sure what to expect. Here is a simple program that does what you want without using a loop. It would be a good exercise to make that work inside a loop.
#include <iostream>
#include <string>
int main(int argc, char **argv)
{
std::string lovely_str;
std::cout << "Enter a string: ";
std::cin >> lovely_str;
std::cout << "got: " << lovely_str << "\n";
return 0;
}
If you insist on using your original program you can use ctrl+d
to signal the end of read strings
Take some help of std::istringstream
& make life easier (notice comments):
#include <iostream>
#include <string>
#include <sstream>
#include <vector>
int main(void) {
// To store the entire line of input
std::string input;
// To store the split words
std::vector<std::string> words;
// Temporary variable to iterate through
std::string temp;
// Constant string to be used
const std::string ban = "broccoli";
std::cout << "Enter some words: ";
std::getline(std::cin, input);
// Here we go
std::istringstream iss(input);
// Separating each words space, e.g. apple <sp> banana => vector apple|banana
while (iss >> temp)
words.push_back(temp);
// Using reference as for-each
for (auto& i : words)
if (i == ban) i = "bleep!";
// Printing the modified vector
for (auto& i : words) std::cout << i << ' ';
std::cout << std::endl;
return 0;
}
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.