45. WAP to understand [sizeof] operator.

 #include<stdio.h>

void main()

{

        int part;

        printf("Understand sizeof operator\n");

        printf("Enter part no : ");

        scanf("%d",&part);

        switch(part)

        {

                case 1:;

                int i=0;

                char ch='a';

                float f=23.5;

                double dd=45.5;

                printf("%ld %ld %ld\n",sizeof(i),sizeof(int),sizeof(10));

                printf("%ld %ld %ld\n",sizeof(ch),sizeof(char),sizeof('a'));

                printf("%ld %ld %ld\n",sizeof(f),sizeof(float),sizeof(23.5f));

                printf("%ld %ld %ld\n",sizeof(dd),sizeof(double),sizeof(45.5));

                printf("%ld\n",sizeof("abc"));

                break;

 

                case 2:

                if(sizeof(4)>-1)

                printf("Yes\n");

                else

                printf("No\n");

                break;

 

                case 3:;

                int a=2,b=4,c=0;

                char d;

                printf("BEFORE c = %d\n",c);

                printf("%ld\n",sizeof(c=a+b));

                printf("AFTER c = %d\n",c);

                printf("%ld\n",sizeof(a+b));

                printf("%ld\n",sizeof(d=a+b));

                break;

 

                case 4:;

                char ch1='a',ch2='b',ch3;

                printf("%ld\n",sizeof(ch1+ch2));

                printf("%ld\n",sizeof(ch3=ch1+ch2));

                break;

 

                case 5:;

                int o = 10;

                double z = 1.2;

                printf("%ld\n",sizeof(o+z));

                printf("%ld\n",sizeof(o>z));

                printf("%ld\n",sizeof(0x12));

                printf("%ld\n",sizeof(012));

                break;

        }

}