arraysize.c

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/* Demonstrates the sizeof() operator */

#include <stdio.h>

/* Declare several 100-element arrays */

int intarray[100];
float floatarray[100];
double doublearray[100];

int main()
{
    /* Display the sizes of numeric data types */

    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;
}