#include<iostream> #include<iomanip> #include<string> using namespace std; int max_students=100; //structure defination struct Student { string name; int roll_no; char grade; int attendence; }; int main() { Student students[max_students]; int studentcount=0; int choice; LOOP: cout<<"-------Welcome to Attendence Management System-------"<<endl; cout<<"--------------Are you Admin or Student---------------"<<endl; cout<<"1. Admin View"<<endl; cout<<"2. Student View"<<endl; cout<<"Enter your choice: "; cin>>choice; switch(choice) { case 1: do{ cout<<"-------Admin View-------"<<endl; cout<<"1. Add Student"<<endl; cout<<"2. Mark Attendence"<<endl; cout<<"3. Display Attendece"<<endl; cout<<"4. Go back to admin or student selection section"<<endl; cout<<"5. Exit"<<endl; cout<<"Enter your choice: "; cin>>choice; switch (choice) { case 1: if(studentcount<max_students) { cout<<"Enter student name: "; cin>> students[studentcount].name; cout<<"Enter roll no: "; cin>>students[studentcount].roll_no; cout<<"Enter grade: "; cin>>students[studentcount].grade; studentcount++; cout<<"Student Added Successfully"<<endl; } else { cout<<"Maximun number of students added"<<endl; } break; case 2: if(studentcount==0) { cout<<"No student to mark Attendence. First add students"<<endl; } else { int rollnumber; cout<<"Enter roll no: "; cin>>rollnumber; int foundIndex = -1; for(int i=0;i<studentcount;i++) { if(students[i].roll_no==rollnumber) { cout<<"Attendence Marked successfully"<<endl; foundIndex=i; break; } } if (foundIndex == -1) { cout << "Student not found." << endl; } } break; case 3: if(studentcount==0){ cout<<"No student to mark Attendence. First add students"<<endl; }else { cout<<"-----Attendence Record---"<<endl; cout<<setw(20)<<"Name"<<setw(20)<<"Roll_no"<<setw(20)<<"Grade"<<setw(20)<<"Attendence"<<endl; for(int i=0; i<studentcount; i++){ cout<<setw(20)<<students[i].name<<setw(20)<<students[i].roll_no<<setw(20)<<students[i].grade<<setw(20); if (students[i].attendence==1) cout<<"Present"<<endl; else cout<<"Absent"<<endl; } } break; case 4: goto LOOP; case 5: cout<<"Exit the program!Good bye"<<endl; break; default: cout<<"Invalid choice!"<<endl; } } while(choice!=5); break; case 2: do { cout<<"-------Srudent View-------"<<endl; cout<<"1. View Attendance\n"; cout<<"2. Exit\n"; cout<<"Enter your choice: "; cin>>choice; switch(choice){ case 1: if(studentcount==0) { cout<<"No student to mark Attendence. First add students"<<endl; } else { for(int i=0;i<studentcount;i++) { cout<<students[i].name<<students[i].roll_no<<students[i].grade<<students[i].attendence; } } break; case 2: cout<<"Exit the program!Good bye"; break; default: cout<<"Invalid choice!"; } } while(choice!=2); break; } }
Write, Run & Share C++ code online using OneCompiler's C++ online compiler for free. It's one of the robust, feature-rich online compilers for C++ language, running on the latest version 17. Getting started with the OneCompiler's C++ compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as C++
and start coding!
OneCompiler's C++ online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.
#include <iostream>
#include <string>
using namespace std;
int main()
{
string name;
cout << "Enter name:";
getline (cin, name);
cout << "Hello " << name;
return 0;
}
C++ is a widely used middle-level programming language.
When ever you want to perform a set of operations based on a condition If-Else is used.
if(conditional-expression) {
//code
}
else {
//code
}
You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.
Switch is an alternative to If-Else-If ladder.
switch(conditional-expression){
case value1:
// code
break; // optional
case value2:
// code
break; // optional
......
default:
code to be executed when all the above cases are not matched;
}
For loop is used to iterate a set of statements based on a condition.
for(Initialization; Condition; Increment/decrement){
//code
}
While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.
while (condition) {
// code
}
Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.
do {
// code
} while (condition);
Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity. Function gets run only when it is called.
return_type function_name(parameters);
function_name (parameters)
return_type function_name(parameters) {
// code
}