Use sizeof() operator to get array size - C Data Type

Description

Use sizeof() operator to get array size

Demo Code

#include <stdio.h>

int main()//from w ww . jav a2  s  . c o m
{
    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;
}

Result

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Related Tutorials

• Use sizeof operator to determine the memory requirements of arrays.
• sizeof operator takes a variable name or data type as an argument and returns the number of bytes required to store the data in memory.
• To determine the length of a statically allocated array, the sizeof operator can be used.
• Get the type size
• What type sizes does your system use?