C Program to understand how pointer to structure variable is sent to function
Write a C Program to show an example how pointer to structure is sent to function. Here’s a Simple Program to check how pointer to structure variable is sent to function in C Programming Language.
This program is used to store and access “name, roll no. and marks ” for many students using structures members.
C Structure :
- C Structure is a collection of different data types which are grouped together and each element in a C structure is called member.
- If you want to access structure members in C, structure variable should be declared.
- Many structure variables can be declared for same structure and memory will be allocated for each separately.
- It is a best practice to initialize a structure to null while declaring, if we don’t assign any values to structure members.
Accessing Structure Members :
To access any member of a structure, we use the member access operator (.). The member access operator is coded as a period between the structure variable name and the structure member that we wish to access.
Below is the source code for C Program to understand how pointer to structure variable is sent to function which is successfully compiled and run on Windows System to produce desired output as shown below :
SOURCE CODE : :
/* Program to understand how a pointer to structure variable is sent to a function */ #include<stdio.h> struct student { char name[20]; int rollno; int marks; }; void display(struct student *); void inc_marks(struct student *); int main( ) { struct student stu1 = {"John", 12, 87}; struct student stu2 = {"Snow", 18, 90}; inc_marks(&stu1); inc_marks(&stu2); display(&stu1); display(&stu2); return 0; } void inc_marks(struct student *stuptr) { (stuptr->marks)++; } void display(struct student *stuptr) { printf("Name - %s\t", stuptr->name); printf("Rollno - %d\t", stuptr->rollno); printf("Marks - %d\n", stuptr->marks); }
OUTPUT : :
//OUTPUT :: Name - John Rollno - 12 Marks - 88 Name - Snow Rollno - 18 Marks - 91
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