52 lines
2.6 KiB
C++
52 lines
2.6 KiB
C++
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// fig07_11.cpp
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// sizeof operator used to determine standard data type sizes.
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#include <fmt/format.h>
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#include <iostream>
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int main() {
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constexpr char c{}; // variable of type char
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constexpr short s{}; // variable of type short
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constexpr int i{}; // variable of type int
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constexpr long l{}; // variable of type long
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constexpr long long ll{}; // variable of type long long
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constexpr float f{}; // variable of type float
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constexpr double d{}; // variable of type double
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constexpr long double ld{}; // variable of type long double
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constexpr int array[20]{}; // built-in array of int
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const int* const ptr{array}; // variable of type int*
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std::cout << fmt::format("sizeof c = {}\tsizeof(char) = {}\n",
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sizeof c, sizeof(char));
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std::cout << fmt::format("sizeof s = {}\tsizeof(short) = {}\n",
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sizeof s, sizeof(short));
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std::cout << fmt::format("sizeof i = {}\tsizeof(int) = {}\n",
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sizeof i, sizeof(int));
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std::cout << fmt::format("sizeof l = {}\tsizeof(long) = {}\n",
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sizeof l, sizeof(long));
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std::cout << fmt::format("sizeof ll = {}\tsizeof(long long) = {}\n",
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sizeof ll, sizeof(long long));
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std::cout << fmt::format("sizeof f = {}\tsizeof(float) = {}\n",
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sizeof f, sizeof(float));
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std::cout << fmt::format("sizeof d = {}\tsizeof(double) = {}\n",
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sizeof d, sizeof(double));
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std::cout << fmt::format("sizeof ld = {}\tsizeof(long double) = {}\n",
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sizeof ld, sizeof(long double));
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std::cout << fmt::format("sizeof array = {}\n", sizeof array);
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std::cout << fmt::format("sizeof ptr = {}\n", sizeof ptr);
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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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