データ型

データ型

データサイズの決定-sizeof

#include<stdio.h>
#pragma warning(disable:4996)

int main() 
{
    int num = 10;
    printf("num의 크기 : %d", sizeof(num));
}

標準データ型-int

#include<stdio.h>
#pragma warning(disable:4996)

int main()
{
    char num1 = 1, num2 = 2, result1 = 0;
    short num3 = 300, num4 = 400, result2 = 0;
	
    printf("size of num1 : %d\n", sizeof(num1));
    printf("size of num2 : %d\n", sizeof(num2));
    printf("size of num3 : %d\n", sizeof(num3));
    printf("size of num4 : %d\n", sizeof(num4));
    
    printf("size of char add : %d\n", sizeof(num1 + num2));
    printf("size of char short : %d\n", sizeof(num3 + num4));
    
    result1 = num1 + num2;
    result2 = num3 + num4;
    printf("size of result1 : %d\n", sizeof(result1));
    printf("size of result2 : %d\n", sizeof(result2));
}

unsigned-0と正の整数

signed