fig05_17.cpp

来自「《c＋＋大学教程》源码」· C++ 代码 · 共 56 行

// Fig. 5.17: fig05_17.cpp
// Demonstrating the sizeof operator.
#include <iostream>

using std::cout;
using std::endl;

int main()
{
   char c;
   short s;
   int i;
   long l;
   float f;
   double d;
   long double ld;
   int array[ 20 ];
   int *ptr = array;

   cout << "sizeof c = " << sizeof c
        << "\tsizeof(char) = " << sizeof( char )
        << "\nsizeof s = " << sizeof s
        << "\tsizeof(short) = " << sizeof( short )
        << "\nsizeof i = " << sizeof i
        << "\tsizeof(int) = " << sizeof( int )
        << "\nsizeof l = " << sizeof l
        << "\tsizeof(long) = " << sizeof( long )
        << "\nsizeof f = " << sizeof f
        << "\tsizeof(float) = " << sizeof( float )
        << "\nsizeof d = " << sizeof d
        << "\tsizeof(double) = " << sizeof( double )
        << "\nsizeof ld = " << sizeof ld
        << "\tsizeof(long double) = " << sizeof( long double )
        << "\nsizeof array = " << sizeof array
        << "\nsizeof ptr = " << sizeof ptr
        << endl;

   return 0;  // indicates successful termination

} // end main

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