Introduction
On this article, we’ll delve right into a complete instance of a scholar administration system applied within the C programming language. This program permits customers to handle a listing of scholars, document their grades, seek for college students, and show related info. It serves as a wonderful illustration of struct utilization, file group, and the implementation of a menu-driven console software.
Program Construction
Header and Definitions
This system begins with together with the required header recordsdata and defining constants. The MAX_STUDENTS and MAX_SUBJECTS constants decide the utmost variety of college students and topics, respectively. The construction Scholar is outlined to retailer scholar info, together with their identify, roll quantity, and grades.
Fundamental Operate
The principle perform initializes an array of Scholar constructions, college students, and tracks the variety of college students utilizing the numStudents variable. It enters a loop the place the consumer is offered with a menu of choices, and the chosen choice is executed by way of a swap assertion.
Menu-Pushed Choices
Add New Scholar: This selection prompts the consumer to enter particulars for a brand new scholar, together with their identify, roll quantity, and initializes their grades. The data is saved within the college students array.
Report Grades: Customers can document grades for a selected scholar by coming into the scholar’s roll quantity. This system then prompts the consumer to enter grades for every topic.
Show Grades: Customers can view the grades of a selected scholar by offering the scholar’s roll quantity. This system shows the grades for every topic together with the scholar’s identify.
Search Scholar: Customers can seek for a scholar both by roll quantity or identify. This system shows related info if the scholar is discovered.
Modify Grades: Customers can modify the grades of a selected scholar by coming into the scholar’s roll quantity. This system prompts the consumer to enter new grades for every topic.
Show College students: This selection shows a listing of all college students together with their names, roll numbers, grades for every topic, common, and GPA (Grade Level Common).
Exit: This system exits the loop and terminates.
Full supply code in C Programming
#embody
// Outline the utmost variety of college students
#outline MAX_STUDENTS 50
// Outline the utmost variety of topics
#outline MAX_SUBJECTS 5
// Outline the construction for a scholar
struct Scholar {
char identify[50];
int rollNumber;
int grades[MAX_SUBJECTS];
};
// Operate so as to add a brand new scholar
void addNewStudent(struct Scholar college students[], int *numStudents) {
if (*numStudents < MAX_STUDENTS) {
printf("Enter the small print for the brand new scholar:n");
// Increment the variety of college students
(*numStudents)++;
// Get the small print from the consumer
printf("Identify: ");
scanf("%s", college students[*numStudents - 1].identify);
printf("Roll Quantity: ");
scanf("%d", &college students[*numStudents - 1].rollNumber);
// Initialize grades to -1 (indicating not but recorded)
for (int i = 0; i < MAX_SUBJECTS; i++) {
college students[*numStudents - 1].grades[i] = -1;
}
printf("Scholar added efficiently!n");
} else {
printf("Most variety of college students reached!n");
}
}
// Operate to document grades for a scholar
void recordGrades(struct Scholar college students[], int numStudents) {
int rollNumber, topic;
printf("Enter the roll variety of the scholar: ");
scanf("%d", &rollNumber);
// Seek for the scholar
int studentIndex = -1;
for (int i = 0; i < numStudents; i++) {
if (college students[i].rollNumber == rollNumber) {
studentIndex = i;
break;
}
}
if (studentIndex != -1) {
printf("Enter grades for the scholar (subject-wise):n");
for (int i = 0; i < MAX_SUBJECTS; i++) {
printf("Topic %d: ", i + 1);
scanf("%d", &college students[studentIndex].grades[i]);
}
printf("Grades recorded efficiently for scholar %s!n", college students[studentIndex].identify);
} else {
printf("Scholar not discovered!n");
}
}
// Operate to show grades for a scholar
void displayGrades(struct Scholar college students[], int numStudents) {
int rollNumber;
printf("Enter the roll variety of the scholar: ");
scanf("%d", &rollNumber);
// Seek for the scholar
int studentIndex = -1;
for (int i = 0; i < numStudents; i++) {
if (college students[i].rollNumber == rollNumber) {
studentIndex = i;
break;
}
}
if (studentIndex != -1) {
printf("nGrades for scholar %s (Roll Quantity: %d):n", college students[studentIndex].identify, college students[studentIndex].rollNumber);
for (int i = 0; i < MAX_SUBJECTS; i++) {
printf("Topic %d: %dn", i + 1, college students[studentIndex].grades[i]);
}
printf("n");
} else {
printf("Scholar not discovered!n");
}
}
// Operate to seek for a scholar by roll quantity or identify
void searchStudent(struct Scholar college students[], int numStudents) {
int alternative;
printf("Search scholar by:n");
printf("1. Roll Numbern");
printf("2. Namen");
printf("Enter your alternative: ");
scanf("%d", &alternative);
if (alternative == 1) {
int rollNumber;
printf("Enter the roll variety of the scholar: ");
scanf("%d", &rollNumber);
// Seek for the scholar
int studentIndex = -1;
for (int i = 0; i < numStudents; i++) {
if (college students[i].rollNumber == rollNumber) {
studentIndex = i;
break;
}
}
if (studentIndex != -1) {
printf("Scholar discovered!n");
printf("Identify: %s, Roll Quantity: %dn", college students[studentIndex].identify, college students[studentIndex].rollNumber);
} else {
printf("Scholar not discovered!n");
}
} else if (alternative == 2) {
char identify[50];
printf("Enter the identify of the scholar: ");
scanf("%s", identify);
// Seek for the scholar
int studentIndex = -1;
for (int i = 0; i < numStudents; i++) {
if (strcmp(college students[i].identify, identify) == 0) {
studentIndex = i;
break;
}
}
if (studentIndex != -1) {
printf("Scholar discovered!n");
printf("Identify: %s, Roll Quantity: %dn", college students[studentIndex].identify, college students[studentIndex].rollNumber);
} else {
printf("Scholar not discovered!n");
}
} else {
printf("Invalid alternative. Please enter a legitimate choice.n");
}
}
// Operate to switch grades for a scholar
void modifyGrades(struct Scholar college students[], int numStudents) {
int rollNumber;
printf("Enter the roll variety of the scholar: ");
scanf("%d", &rollNumber);
// Seek for the scholar
int studentIndex = -1;
for (int i = 0; i < numStudents; i++) {
if (college students[i].rollNumber == rollNumber) {
studentIndex = i;
break;
}
}
if (studentIndex != -1) {
printf("Enter the brand new grades for the scholar (subject-wise):n");
for (int i = 0; i < MAX_SUBJECTS; i++) {
printf("Topic %d: ", i + 1);
scanf("%d", &college students[studentIndex].grades[i]);
}
printf("Grades modified efficiently for scholar %s!n", college students[studentIndex].identify);
} else {
printf("Scholar not discovered!n");
}
}
// Operate to show the checklist of scholars
void displayStudents(struct Scholar college students[], int numStudents) {
printf("nList of College students:n");
for (int i = 0; i < numStudents; i++) {
printf("Identify: %s, Roll Quantity: %dn", college students[i].identify, college students[i].rollNumber);
// Show grades and common
printf("Grades:n");
for (int j = 0; j < MAX_SUBJECTS; j++) {
float grade = students[i].grades[j];
if (grade > 0) {
printf(“Topic %d: %.2fn”, j + 1, grade);
} else {
printf(“Topic %d: %sn”, j + 1, “N/A”);
}
}
// Calculate and show common
int sum = 0;
for (int j = 0; j < MAX_SUBJECTS; j++) {
sum += students[i].grades[j];
}
float average = (float)sum / MAX_SUBJECTS;
if (average > 0) {
printf(“Common: %.2fn”, common);
} else {
printf(“Common: %.2fn”, “N/A”);
}
// Calculate and show GPA
float gpa = 0.0;
for (int j = 0; j < MAX_SUBJECTS; j++) {
float grade = students[i].grades[j];
if (grade >= 80) {
gpa += 4.0;
} else if (grade >= 70) {
gpa += 3.0;
} else if (grade >= 70) {
gpa += 2.0;
} else if (grade >= 60) {
gpa += 1.0;
}
}
gpa /= MAX_SUBJECTS;
printf(“GPA: %.2fn”, gpa);
printf(“n”);
}
}
int predominant() {
struct Scholar college students[MAX_STUDENTS];
int numStudents = 0;
int alternative;
do {
// Show menu
printf(“Menu:n”);
printf(“1. Add New Studentn”);
printf(“2. Report Gradesn”);
printf(“3. Show Gradesn”);
printf(“4. Search Studentn”);
printf(“5. Modify Gradesn”);
printf(“6. Show Studentsn”);
printf(“7. Exitn”);
printf(“Enter your alternative: “);
scanf(“%d”, &alternative);
swap (alternative) {
case 1:
addNewStudent(college students, &numStudents);
break;
case 2:
recordGrades(college students, numStudents);
break;
case 3:
displayGrades(college students, numStudents);
break;
case 4:
searchStudent(college students, numStudents);
break;
case 5:
modifyGrades(college students, numStudents);
break;
case 6:
displayStudents(college students, numStudents);
break;
case 7:
printf(“Exiting program.n”);
break;
default:
printf(“Invalid alternative. Please enter a legitimate choice.n”);
}
} whereas (alternative != 7);
return 0;
}
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