What is structure? How is it different from array? Create a structure student having data members name, roll-number and percentage. Complete the program to display the name of student having percentage greater than or equal to 60.

Question

Suresh Chand · Accepted Answer

A structure is a collection of variables under a single name. These variables can be of different types, and each has a name that is used to select it from the structure. The variables are called members of the structure. A structure is a convenient way of grouping general pieces of the related information together. A structure can be defined as a new named type or user-defined data type, thus extending the number of available types. It can be our other structures, arrays, or pointers as some of its members. The syntax of structure is struct structure_name { data_type member_variables1; data_type member_variables2; ...... ....... data_type member_variablesn; } Once structure_name is declared as a new data type, the variable of that can be declared as struct structure_name structure_variable; The major difference between array and structure are ARRAY STRUCTURE Array refers to a collection consisting of elements of homogeneous data type. Structure refers to a collection consisting of elements of heterogeneous data type. Array uses subscripts or “[ ]” (square bracket) for element access Structure uses “.” (Dot operator) for element access Array is pointer as it points to the first element of the collection. Structure is not a pointer Instantiation of Array objects is not possible. Instantiation of Structure objects is possible. Array size is fixed and is basically the number of elements multiplied by the size of an element. Structure size is not fixed as each element of Structure can be of different type and size. Bit filed is not possible in an Array. Bit filed is possible in an Structure. Array declaration is done simply using [] and not any keyword. Structure declaration is done with the help of “struct” keyword. Arrays is a non-primitive datatype Structure is a user-defined datatype. Array traversal and searching is easy and fast. Structure traversal and searching is complex and slow. data_type array_name[size]; struct sruct_name{ data_type1 ele1; data_type2 ele2; }; Array elements are stored in continuous memory locations. Structure elements may or may not be stored in a continuous memory location. Array elements are accessed by their index number using subscripts. Structure elements are accessed by their names using dot operator. Program Part: #include struct Student{ char name[20]; int roll; int percentage; }; void main(){ struct Student s[100]; int n, i; printf('Enter number of students: '); scanf('%d', &n); for( i = 0; i < n; i++ ){ printf('Enter %d Student Name, Roll No and Percentage: n', i + 1); scanf('%s%d%d', &s[i].name, &s[i].roll, &s[i].percentage); } printf('Students which have percenatge greater than 60 are : n'); for(int i = 0; i < n; i++){ if( s[i].percentage >= 60 ){ printf('%sn', s[i].name); } } }

What is structure? How is it different from array? Create a structure student having data members name, roll-number and percentage. Complete the program to display the name of student having percentage greater than or equal to 60.

Leave your Answer:

Hits Counter

Question

What is structure? How is it different from array? Create a structure student having data members name, roll-number and percentage. Complete the program to display the name of student having percentage greater than or equal to 60.

Leave your Answer: