Main Menu Demo Project

Main Menu Demo Project 

• This project will demonstrate how to create and use Main Menu in project.
• Project uses concepts of Functions to implement project.

Following Program Demonstrate how to use MAIN MENU in C Project based on Library Management System.

#include<stdio.h>

void MainMenu();

void DrawLine(int n);

void AddBooks();

void AddStudentRecords();

void SearchBooks();

void IssueBooks();

void DisplayBooks();

void EditBooks();

int main(){

MainMenu();

return 0;

} //End of Main function

void MainMenu(){

int choice;

char chr;

system("cls");

DrawLine(15);

printf(" MAIN MENU ");

DrawLine(15);

printf("\n\t1. Add Books\n");

printf("\t2. Add Student Record\n");

printf("\t3. Search Books\n");

printf("\t4. Issue Books\n");

printf("\t5. Display Books\n");

printf("\t6. Edit Book Records\n");

printf("\t7. Exit System\n");

DrawLine(41);

printf("\nEnter your choice:");

scanf("%d", &choice);

switch(choice){

case 1:

AddBooks();

break;

case 2:

AddStudentRecords();

break;

case 3:

SearchBooks();

break;

case 4:

IssueBooks();

break;

case 5:

DisplayBooks();

break;

case 6:

EditBooks();

break;

case 7:

printf("Exiting System...\n");

printf("\nAre you sure!!!\nPress Y/y to Exit and N/n to Continue..");

chr = getch();

if(chr == 'Y' || chr == 'y')

printf("\nHave a Nice Day..");

else

MainMenu();

break;

default: printf("Invalid Input...Try again...");

break;

}

}//End of MainMenu

void DrawLine(int n){

int i;

for(i=0; i<n; i++)

printf("%c",254);

}

void AddBooks(){

system("cls");

DrawLine(30);

printf("\nAdd Logic of Add Books here...\n");

DrawLine(30);

getch();

MainMenu();

}

void AddStudentRecords(){

system("cls");

DrawLine(30);

printf("\nAdd Logic of Student Record here...\n");

DrawLine(30);

getch();

MainMenu();

}

void SearchBooks(){

system("cls");

DrawLine(30);

printf("\nAdd Logic of Search Books here...\n");

DrawLine(30);

getch();

MainMenu();

}

void IssueBooks(){

system("cls");

DrawLine(30);

printf("\nAdd Logic of Issue Books here...\n");

DrawLine(30);

getch();

MainMenu();

}

void DisplayBooks(){

system("cls");

DrawLine(30);

printf("\nAdd Logic of Display Books here...\n");

DrawLine(30);

getch();

MainMenu();

}

void EditBooks(){

system("cls");

DrawLine(30);

printf("\nAdd Logic of Edit Books here...\n");

DrawLine(30);

getch();

MainMenu();

}

//This code is developed by CProgramPracticals.Blogspot.Com

//Give reference to CProgramPracticals.Blogspot.Com site while using this code.

Sample Output

Fig. Sample Output for Project Library Management System - Main Menu Code

Count vowels in given file.

C Program to count Vowels in a given file.

This program will read input from "data.txt" file and prints total number of vowels.

#include<stdio.h>
int main()
{
  FILE *fp;
  char ch;
  int cnt=0;

  fp = fopen("data.txt","r");

  if (fp == NULL)
  {
  printf("Can't Open File.");
  exit(1);
  }
  printf("File content is : ");
  ch = fgetc(fp);
  
  while(ch != EOF)
  {
    putchar(ch);
if( ch=='A' || ch=='E' || ch=='I' || ch=='O' || ch=='U')
        cnt++;
    ch = fgetc(fp);
  }

  printf("\n\nTotal vowels in given file = %d",cnt);
  return 0;
}

Output of Program

File content is : THIS IS TOP C PROGRAMMING PRACTICALS BLOG.

Total vowels in given file = 10

Computer Memory Units

Followings are basic computer memory units:

• Bit - A Binary digit (Bit) is a smallest computer memory unit. It can hold 0 and 1.

• Byte - Collection of 8 bits is called a Byte.

Symbols used in Computer Memory Units

Symbol	Prefix Name	Decimal Value	Binary Value
k	kilo	1000	210 = 10241
M	mega	10002	220 = 10242
G	giga	10003	230 = 10243
T	tera	10004	240 = 10244
P	peta	10005	250 = 10245
E	exa	10006	260 = 10246
Z	zetta	10007	270 = 10247
Y	yotta	10008	280 = 10248

Memory Units Short forms

• Byte = B

• Kilobyte = KB

• Megabytes = MB

• Gigabytes = GB

• Terabytes = TB

• Petabytes = PB

Memory Units Conversion

Units	Conversion
1 Byte	8 Bits
1 KB	1024 Bytes
1 MB	1024 KB
1 GB	1024 MB
1 TB	1024 GB
1 PB	1024 TB