58 lines
2.4 KiB
C++
58 lines
2.4 KiB
C++
// fig08_05.cpp
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// Printing string characteristics.
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#include <fmt/format.h>
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#include <iostream>
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#include <string>
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// display string statistics
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void printStatistics(const std::string& s) {
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std::cout << fmt::format(
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"capacity: {}\nmax size: {}\nsize: {}\nempty: {}",
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s.capacity(), s.max_size(), s.size(), s.empty());
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}
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int main() {
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std::string string1; // empty string
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std::cout << "Statistics before input:\n";
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printStatistics(string1);
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std::cout << "\n\nEnter a string: ";
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std::cin >> string1; // delimited by whitespace
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std::cout << fmt::format("The string entered was: {}\n", string1);
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std::cout << "Statistics after input:\n";
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printStatistics(string1);
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std::cout << "\n\nEnter a string: ";
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std::cin >> string1; // delimited by whitespace
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std::cout << fmt::format("The string entered was: {}\n", string1);
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std::cout << "Statistics after input:\n";
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printStatistics(string1);
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// append 46 characters to string1
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string1 += "1234567890abcdefghijklmnopqrstuvwxyz1234567890";
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std::cout << fmt::format("\n\nstring1 is now: {}\n", string1);
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std::cout << "Statistics after concatenation:\n";
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printStatistics(string1);
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string1.resize(string1.size() + 10); // add 10 elements to string1
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std::cout << "\n\nStatistics after resizing to add 10 characters:\n";
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printStatistics(string1);
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std::cout << '\n';
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}
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/**************************************************************************
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* (C) Copyright 1992-2022 by Deitel & Associates, Inc. and *
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* Pearson Education, Inc. All Rights Reserved. *
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* *
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* DISCLAIMER: The authors and publisher of this book have used their *
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* best efforts in preparing the book. These efforts include the *
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* development, research, and testing of the theories and programs *
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* to determine their effectiveness. The authors and publisher make *
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* no warranty of any kind, expressed or implied, with regard to these *
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* programs or to the documentation contained in these books. The authors *
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* and publisher shall not be liable in any event for incidental or *
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* consequential damages in connection with, or arising out of, the *
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* furnishing, performance, or use of these programs. *
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**************************************************************************/
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