A structure must be declared first before using it just like all other data type. Structure can be declared by two ways. … Tagged Declaration: SyntaxExamplestruct tag_name { data-type var-name1; data-type var-name2; : data-type var-nameN; };struct product { int pid; char name[20]; int qnt; float price; };Structure Declaration | Hexainclude www.hexainclude.com › structure-declaration