1 /*测试sizeof() 测试环境：windows 7 64位操作系统 VS2012编译器 */ 2 #include <iostream> 3 using namespace std; 4 5 int main() 6 { 7 char a; 8 short int b; 9 int c; 10 long int d; 11 float e; 12 double f; 13 long double g; 14 int* h; 15 double* i; 16 float* j; 17 string strArr1; 18 19 cout << "sizeof(char) = " << sizeof(a) << endl; 20 cout << "sizeof(short int) = " << sizeof(b) << endl; 21 cout << "sizeof(int) = " << sizeof(c) << endl; 22 cout << "sizeof(long int) = " << sizeof(d) << endl; 23 cout << "sizeof(float) = " << sizeof(e) << endl; 24 cout << "sizeof(double) = " << sizeof(f) << endl; 25 cout << "sizeof(long double) = " << sizeof(g) << endl; 26 cout << "sizeof(int*) = " << sizeof(h) << endl; 27 cout << "sizeof(double*) = " << sizeof(i) << endl; 28 cout << "sizeof(float*) = " << sizeof(j) << endl; 29 cout << "sizeof(string) = " << sizeof(strArr1) << endl; 30 31 system("pause"); 32 33 return 0; 34 }
测试结果：
