Structures

Author: Derrick1908

Array_of_Structures.cpp

@@ -0,0 +1,50 @@
+#include<stdio.h>
+#include<conio.h>
+#include<string.h>
+typedef struct
+{
+	int id;
+	char name[20];
+	float percentage;
+
+}student;
+
+void EnterDetails(student[],int);  /*Function Declaration of the Function to Add Student Details*/
+int main()
+{
+	student s[10];                     /*Declaration of the Structure Variables*/
+	int number, i;
+
+	printf("\nEnter the Number of Students :: ");
+	scanf_s("%d", &number);
+
+	EnterDetails(s, number); /*Entering the Details of the Students through a Function (Call by Reference)*/
+	
+	  /*Displaying the Details of the Student through a For Loop*/
+	printf("\nStudent Details are as follows :: ");
+	for (i = 0; i < number; i++)
+	{
+		printf("\n************Student No %d :: **********",i+1);
+		printf("\n ID :: %d", s[i].id);
+		printf("\n Name :: %s", s[i].name);
+		printf("\n Percentage :: %f", s[i].percentage);
+	}
+	
+	_getch();
+	return 0;
+}
+
+void EnterDetails(student s[], int n)
+{
+	for (int i = 0; i < n; i++)
+	{
+		printf("\n**************Enter the Details for Student %d :: ***********",i+1); /*User Entering the Details into the Structure Variables*/
+		printf("\nID/Roll No :: ");
+		scanf_s("%d", &s[i].id);
+		getchar();          /*To Consume the unwanted new line character*/
+		printf("Name :: ");
+		gets_s(s[i].name, 20);
+		printf("Percentage :: ");
+		scanf_s("%f", &s[i].percentage);
+	}
+}

Comparing_Copying_Structure_Variables.cpp

@@ -0,0 +1,47 @@
+#include<stdio.h>
+#include<conio.h>
+#include<string.h>
+typedef struct
+{
+	int id;
+	char name[20];
+	float percentage;
+
+}student;
+void DisplayDetails(student);
+int main()
+{
+	student s1, s2;                     /*Declaration of the Structure Variables*/
+	int x;
+
+	s1 = { 111,"Rao",72.50 };        /*Initializing the Values of the Structure Variables*/
+	s2 = { 222,"Reddy",67.00 };
+	
+	student s3;
+	s3 = s2;          /*Equating one Structure Variable to the other*/
+
+	DisplayDetails(s1);      /*Displaying the Details of the Student through a Funtion*/
+	x = ((s2.id == s3.id) && (s2.percentage == s3.percentage) && (strcmp(s2.name, s3.name) == 0)) ? 1 : 0;
+	if (x)
+	{
+		printf("\nStudent 3 is a copy of Student 2 i.e. Both are the same.");
+		DisplayDetails(s2);
+	}
+	else
+	{
+		printf("\nStudent 3 and Student 2 different entries.");
+		DisplayDetails(s2);
+		DisplayDetails(s3);
+	}
+	
+	_getch();
+	return 0;
+}
+
+void DisplayDetails(student s)
+{
+	printf("\nStudent Details are as follows :: ");
+	printf("\n ID :: %d", s.id);
+	printf("\n Name :: %s", s.name);
+	printf("\n Percentage :: %f", s.percentage);
+}

Define_Access_Structure_Members.cpp

@@ -0,0 +1,49 @@
+#include<stdio.h>
+#include<conio.h>
+#include<string.h>
+typedef struct student
+{
+	int id;
+	char name[20];
+	float percentage;
+	
+}student;
+void DisplayDetails(student);   /*Function declaration*/
+int main()
+{
+	student s1, s2;                     /*Declaration of the Structure Variables*/
+	student s3 = { 3, "Devon Smith", 98 };
+	
+	s1.id = 1;
+	strcpy_s(s1.name, "John Smith");
+	s1.percentage = 62.5;
+	
+	printf("\nEnter the Details for Student 2 ::"); /*User Entering the Details into the Structure Variables*/
+	printf("\nID/Roll No :: ");
+	scanf_s("%d", &s2.id);
+	getchar();          /*To Consume the unwanted new line character*/
+	printf("\nName :: ");
+	gets_s(s2.name, 20);
+	printf("\nPercentage :: ");
+	scanf_s("%f", &s2.percentage);
+
+	DisplayDetails(s1);      /*Displaying the Details of the Student through a Funtion*/
+
+	printf("\nStudent Details are as follows :: "); 
+	printf("\n ID :: %d", s2.id);
+	printf("\n Name :: %s", s2.name);
+	printf("\n Percentage :: %f", s2.percentage);
+
+	DisplayDetails(s3);
+
+	_getch();
+	return 0;
+}
+
+void DisplayDetails(student s)
+{
+	printf("\nStudent Details are as follows :: ");
+	printf("\n ID :: %d", s.id);
+	printf("\n Name :: %s", s.name);
+	printf("\n Percentage :: %f", s.percentage);
+}

Structure_Union_Pointer.cpp

@@ -0,0 +1,64 @@
+#include<stdio.h>
+#include<conio.h>
+#include<string.h>
+typedef struct 
+{
+	int id;
+	char name[20];
+	float percentage;
+
+}student;
+typedef union {
+	int id;
+	char name[20];
+	float percentage;
+}str;
+void DisplayDetails(student *);
+int main()
+{
+	student s1, s2, *s4;                     /*Declaration of the Structure Variables*/
+	
+	s4 = &s2;
+	s1.id = 1;
+	strcpy_s(s1.name, "John Smith");
+	s1.percentage = 62.5;
+
+	printf("\nEnter the Details for Student 2 ::"); /*User Entering the Details into the Structure Variables*/
+	printf("\nID/Roll No :: ");
+	scanf_s("%d", &s4->id);    /*&s2.id*/
+	getchar();          /*To Consume the unwanted new line character*/
+	printf("Name :: ");
+	gets_s(s4->name, 20);     /*s2.name*/
+	printf("Percentage :: ");
+	scanf_s("%f", &s4->percentage);
+
+	DisplayDetails(&s1);      /*Displaying the Details of the Student through a Funtion*/
+
+	printf("\nStudent Details are as follows :: ");
+	printf("\n ID :: %d", s2.id);
+	printf("\n Name :: %s", s2.name);
+	printf("\n Percentage :: %f", s2.percentage);
+
+	str u1, u2;
+	u1.id = 5;
+	strcpy_s(u1.name, "John Edgar");
+	u1.percentage = 78;
+	printf("\n\n\n************* Union Details are as follows :: ***************");
+	printf("\n ID :: %d", u1.id);
+	printf("\n Name :: %s", u1.name);
+	printf("\n Percentage :: %f", u1.percentage);
+	printf("\n*******************************************");
+	printf("\nSize of the Struture Variable is %d", sizeof(s1));
+	printf("\nSize of the Union Variable is %d", sizeof(u1));
+
+	_getch();
+	return 0;
+}
+
+void DisplayDetails(student *s)
+{
+	printf("\nStudent Details are as follows :: ");
+	printf("\n ID :: %d", s->id);
+	printf("\n Name :: %s", s->name);
+	printf("\n Percentage :: %f", (*s).percentage);
+}