使用sizeof()运算符来获取数组大小

#include <stdio.h>

int main()
{
    int intarray[100];
    float floatarray[100];
    double doublearray[100];

    printf("\n\nSize of int = %d bytes", sizeof(int));
    printf("\nSize of short = %d bytes", sizeof(short));
    printf("\nSize of long = %d bytes", sizeof(long));
    printf("\nSize of long long = %d bytes", sizeof(long long));
    printf("\nSize of float = %d bytes", sizeof(float));
    printf("\nSize of double = %d bytes", sizeof(double));

    /* display the sizes of the three arrays */

    printf("\nSize of intarray = %d bytes", sizeof(intarray));
    printf("\nSize of floatarray = %d bytes", sizeof(floatarray));
    printf("\nSize of doublearray = %d bytes\n", sizeof(doublearray));

    return 0;
}