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//program to calculate size of a variable using sizeof operator #include<iostream.h> #include<conio.h> void main() { int a=10; float pi=3.14; char ch='a'; double d=1.2345; clrscr(); cout<<"\nsize of an integer variable is "<<sizeof(a); cout<<"\nsize of an float variable is "<<sizeof(pi); cout<<"\nsize of an char variable is "<<sizeof(ch); cout<<"\nsize of an double variable is "<<sizeof(d); getch(); }