diff --git a/.github/workflows/npm-publish-github-packages.yml b/.github/workflows/npm-publish-github-packages.yml
new file mode 100644
index 0000000..ea2d329
--- /dev/null
+++ b/.github/workflows/npm-publish-github-packages.yml
@@ -0,0 +1,36 @@
+# This workflow will run tests using node and then publish a package to GitHub Packages when a release is created
+# For more information see: https://docs.github.com/en/actions/publishing-packages/publishing-nodejs-packages
+
+name: Node.js Package
+
+on:
+  release:
+    types: [created]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+      - run: npm ci
+      - run: npm test
+
+  publish-gpr:
+    needs: build
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          registry-url: https://npm.pkg.github.com/
+      - run: npm ci
+      - run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.GITHUB_TOKEN}}
diff --git a/5 student.c b/5 student.c
new file mode 100644
index 0000000..fc278b1
--- /dev/null
+++ b/5 student.c	
@@ -0,0 +1,32 @@
+//A C program that reads the names and marks of 5 students
+#include <stdio.h>
+#include <stdlib.h>
+
+int main() {
+    FILE *fptr;
+    char name[50];
+    int marks, i;
+
+    // Open the file in write mode
+    fptr = fopen("C:\\Users\\clemoh\\OneDrive\\Desktop\\cfiles\\students.txt", "w");
+    if (fptr == NULL) {
+        printf("Error opening the file.\n");
+        exit(1);
+    }
+
+    // Loop to read name and marks of 5 students and store them in the file
+    for (i = 1; i <= 5; i++) {
+        printf("Enter name of student %d: ", i);
+        scanf("%s", name);
+        printf("Enter marks of student %d: ", i);
+        scanf("%d", &marks);
+
+        // Write the name and marks to the file
+        fprintf(fptr, "Student %d: Name = %s, Marks = %d\n", i, name, marks);
+    }
+
+    fclose(fptr);
+    printf("Data written successfully to students.txt.\n");
+    return 0;
+}
+}
diff --git a/Appending c file.c b/Appending c file.c
new file mode 100644
index 0000000..d661989
--- /dev/null
+++ b/Appending c file.c	
@@ -0,0 +1,29 @@
+//appending a sentence in a file
+#include <stdio.h>
+#include <stdlib.h>
+
+void appendToFile() {
+    FILE *fptr;
+    char sentence[100];
+
+    // Open the file in append mode
+    fptr = fopen("C:\\Users\\clemoh\\OneDrive\\Desktop\\cfiles\\data.txt", "a");
+    if (fptr == NULL) {
+        printf("Error opening file for appending.\n");
+        exit(1);
+    }
+
+    // Get a second sentence from the user
+    printf("Enter another sentence to append (up to 100 characters): ");
+    fgets(sentence, sizeof(sentence), stdin);
+
+    // Append the sentence to the file
+    fprintf(fptr, "%s", sentence);
+    fclose(fptr);
+    printf("Sentence appended to file successfully.\n");
+}
+
+int main() {
+    appendToFile();
+    return 0;
+}
diff --git a/C program to check whether a number is even.c b/C program to check whether a number is even.c
new file mode 100644
index 0000000..d936724
--- /dev/null
+++ b/C program to check whether a number is even.c	
@@ -0,0 +1,13 @@
+//C program to check whether a number is even 
+#include<stdio.h>
+int main() {
+    int number;
+    printf("Enter the number");
+    scanf("%d", &number);
+    if(number % 2 == 0){
+        printf("The number is even\n");
+    }else {
+        printf("The number is odd\n");
+    }
+    return 0;
+}
diff --git a/Employee program.c b/Employee program.c
new file mode 100644
index 0000000..0881501
--- /dev/null
+++ b/Employee program.c	
@@ -0,0 +1,27 @@
+//C structure program
+#include<stdio.h>
+
+struct Employee{
+    char name[25];
+    char email[50];
+    char department[20];
+    float salary;
+    int ID;
+}employee;
+int main(){
+    struct Employee employee={
+        "john Doe",
+        "john.doe@company.com",
+        "Human Resources",
+        55000.50,
+        12345,
+    
+};
+    
+    printf("name:%s\n",&employee.name);
+    printf("email:%s\n",&employee.email);
+    printf("department:%s\n",&employee.department);
+    printf("salary:%f\n",&employee.salary);
+    printf("ID:%d\n",&employee.ID);
+    
+    return 0;
diff --git a/Prompt variables.c b/Prompt variables.c
new file mode 100644
index 0000000..2cc52d8
--- /dev/null
+++ b/Prompt variables.c	
@@ -0,0 +1,38 @@
+//c variables and data types
+//pre-processor directive
+#include <stdio.h> scanf(), printf()
+int main(){
+	//declaration and intialization 
+	char a;
+	char name[]={};
+	int age;
+	float area;
+	double salary;
+	
+		printf("enter  character: ");
+	scanf("%s",&a);
+printf("the character is %c \n",a);
+	
+	printf("enter  name: ");
+	scanf("%s",&name);
+	printf("the string is %s \n",name);	
+	
+	printf("enter age: ");
+	scanf("%d",&age);
+printf("the integer is %d years \n",age);
+	
+
+printf("enter area: ");
+	scanf("%f",&area);	
+printf("the float is %.3f meters squared \n",area);	
+	
+	
+	printf("enter salary: ");
+	scanf("%lf",&salary);
+	printf("the double is  Ksh,%.2lf \n",salary);
+	
+	
+	printf("<complete...>");
+	
+	return 0;
+}
diff --git a/area of a rectangle.c b/area of a rectangle.c
new file mode 100644
index 0000000..94f6c43
--- /dev/null
+++ b/area of a rectangle.c	
@@ -0,0 +1,12 @@
+//program to find the area of a rectangle 
+#include <stdio.h>
+int main() {
+int length, width, area;
+printf("length: ");
+scanf("%d", &length);
+printf("width: ");
+scanf("%d", &width);
+area = length * width;
+printf("area %.d\n", area);
+return 0;
+}
diff --git a/area of arectangle.c b/area of arectangle.c
new file mode 100644
index 0000000..94f6c43
--- /dev/null
+++ b/area of arectangle.c	
@@ -0,0 +1,12 @@
+//program to find the area of a rectangle 
+#include <stdio.h>
+int main() {
+int length, width, area;
+printf("length: ");
+scanf("%d", &length);
+printf("width: ");
+scanf("%d", &width);
+area = length * width;
+printf("area %.d\n", area);
+return 0;
+}
diff --git a/bank loan qualification.c b/bank loan qualification.c
new file mode 100644
index 0000000..6131df3
--- /dev/null
+++ b/bank loan qualification.c	
@@ -0,0 +1,16 @@
+//bank loan
+#include<stdio.h>
+int main(){
+int age,income;
+printf("enter your age:");
+scanf ("%d",&age);
+printf ("enter income:");
+scanf("%d",&income);
+if(age>=21&& income>21000){
+printf("congratulations you qualify for the loan\n");
+}
+else{
+printf("you don't qualify for the loan\n");
+}
+return 0;
+}
diff --git a/c file program.c b/c file program.c
new file mode 100644
index 0000000..0ee7bd1
--- /dev/null
+++ b/c file program.c	
@@ -0,0 +1,22 @@
+//C file handling :writing to a file
+#include<stdio.h> //scanf(),printf(),fprintf(),fscanf(),fclose()
+#include<stdlib.h> //exit()
+
+int main () {
+      int number;
+      FILE *fptr; //declare pointer
+      
+      fptr = fopen("C:\\users\\JonaN\\Desktop\\C program\\file.txt","w");
+      if (fptr==NULL){
+         printf("Error opening the file");
+         exit(1);
+      }
+ printf("Enter a random number:");
+ scanf("%d", &number);
+
+   fprintf(fptr, "The number entered is %d",number);
+   fclose(fptr);
+   printf("Number written succesfully");
+   
+    return 0; //execution successfully
+}
diff --git a/c structures book.c b/c structures book.c
new file mode 100644
index 0000000..7b1cb46
--- /dev/null
+++ b/c structures book.c	
@@ -0,0 +1,32 @@
+// c structures
+#include <stdio.h>
+#include <string> //strcpy
+stuct book {
+     char title[30]
+     char name[30]
+     char ISBN[13]
+     int publication_year;
+     float price;
+}
+ int main() {
+    //initializing variable (operators) 
+    strcpy(book1.title,"introducction to c structure");
+    strcpy(book1.name,"john smith");
+    strcpy(book1.ISBN,"701_354603975");
+    Book1.publication_year=2022;
+    book1.price=49.99;
+    
+    printf("Title;%s\n",book1.introduction to c programming);
+    printf("Author %s\n",book1.john smith);
+    printf("publication_year %s\n",book1.2022);
+    printf("ISBN %s \n",book1.701_35460395);
+    printf("price %s\n",book1.49.99)
+    
+    //printf("enter name ")
+    //scanf("%s",&introduction to c structure);
+    
+    return 0;
+    
+     
+     
+
diff --git a/do while program.c b/do while program.c
new file mode 100644
index 0000000..8de064b
--- /dev/null
+++ b/do while program.c	
@@ -0,0 +1,18 @@
+//Do while program
+#include <stdio.h>
+
+int main() {
+    int i = 1, n;
+
+    // Prompt user for input
+    printf("Enter the number of terms: ");
+    scanf("%d", &n);
+
+    // Do..while loop to calculate and print the cube of each number
+    do {
+        printf("Number is : %d and cube of %d is : %d\n", i, i, i * i * i);
+        i++;
+    } while (i <= n);
+
+    return 0;
+}
diff --git a/for loop.c b/for loop.c
new file mode 100644
index 0000000..bc4fd2c
--- /dev/null
+++ b/for loop.c	
@@ -0,0 +1,17 @@
+//For loop program
+#include <stdio.h>
+
+int main() {
+    int i, n;
+
+    // Prompt user for input
+    printf("Enter the number of terms: ");
+    scanf("%d", &n);
+
+    // For loop to calculate and print the cube of each number
+    for (i = 1; i <= n; i++) {
+        printf("Number is : %d and cube of %d is : %d\n", i, i, i * i * i);
+    }
+
+    return 0;
+}
diff --git a/library program.c b/library program.c
new file mode 100644
index 0000000..0436c24
--- /dev/null
+++ b/library program.c	
@@ -0,0 +1,30 @@
+ #include<stdio.h>
+int main(){
+int bookid;
+double duedate,returndate;
+double finerate,fineamount,daysoverdue;
+printf("enter the bookid:");
+scanf("%d",&bookid);
+printf("enter the duedate:");
+scanf("%lf",&duedate);
+printf("enter the returndate:");
+scanf("%lf",&returndate);
+daysoverdue=returndate-duedate;
+if(daysoverdue<=7){
+finerate=20;
+}
+else if(daysoverdue<=14){
+finerate=50;
+}
+else {
+finerate=100;
+}
+fineamount=finerate*daysoverdue;
+printf("bookid:%d\n",bookid);
+printf("duedate:%lf\n",duedate);
+printf("returndate:%lf\n",returndate);
+printf("daysoverdue:%lf\n",daysoverdue);
+printf("finerate:%lf\n",finerate);
+printf("fineamount:%lf\n",fineamount);
+return 0;
+}
diff --git a/n students.c b/n students.c
new file mode 100644
index 0000000..a895eff
--- /dev/null
+++ b/n students.c	
@@ -0,0 +1,35 @@
+//A C program that reads the names and marks of an n number of students
+#include <stdio.h>
+#include <stdlib.h>
+
+int main() {
+    FILE *fptr;
+    char name[50];
+    int marks, i, n;
+
+    // Open the file in append mode
+    fptr = fopen("C:\\Users\\clemoh\\OneDrive\\Desktop\\cfiles\\students.txt", "a");
+    if (fptr == NULL) {
+        printf("Error opening the file.\n");
+        exit(1);
+    }
+
+    // Prompt user for number of students
+    printf("Enter the number of students: ");
+    scanf("%d", &n);
+
+    // Loop to read name and marks of n students and append them to the file
+    for (i = 1; i <= n; i++) {
+        printf("Enter name of student %d: ", i);
+        scanf("%s", name);
+        printf("Enter marks of student %d: ", i);
+        scanf("%d", &marks);
+
+        // Append the name and marks to the file
+        fprintf(fptr, "Student %d: Name = %s, Marks = %d\n", i, name, marks);
+    }
+
+    fclose(fptr);
+    printf("Data written successfully to students.txt.\n");
+    return 0;
+}
diff --git a/students grading system.c b/students grading system.c
new file mode 100644
index 0000000..a07e3c3
--- /dev/null
+++ b/students grading system.c	
@@ -0,0 +1,32 @@
+// grading system of students 
+#include <stdio.h>
+
+int main() {
+    int marks1, marks2, marks3, average;
+
+    printf("Enter marks for subject 1: ");
+    scanf("%d", &marks1);
+    
+    printf("Enter marks for subject 2: ");
+    scanf("%d", &marks2);
+    
+    printf("Enter marks for subject 3: ");
+    scanf("%d", &marks3);
+
+    average = (marks1 + marks2 + marks3) / 3;
+    printf("Average Marks = %.d\n", average);
+
+    if (average >= 70) {
+        printf("Grade: A\n");
+    } else if (average >= 60) {
+        printf("Grade: B\n");
+    } else if (average >= 50) {
+        printf("Grade: C\n");
+    } else if (average >= 40) {
+        printf("Grade: D\n");
+    } else {
+        printf("Grade: E (Fail)\n");
+    }
+
+    return 0;
+    }
diff --git a/write to a file.c b/write to a file.c
new file mode 100644
index 0000000..1e27e9b
--- /dev/null
+++ b/write to a file.c	
@@ -0,0 +1,28 @@
+//write a sentence into a file
+#include <stdio.h>
+#include <stdlib.h>
+
+void writeToFile() {
+    FILE *fptr;
+    char sentence[100];
+
+    // Open the file in write mode
+    fptr = fopen("C:\\Users\\clemoh\\OneDrive\\Desktop\\cfiles\\data.txt", "w");
+    if (fptr == NULL) {
+        printf("Error opening file for writing.\n");
+        exit(1);
+    }
+
+    // Get a sentence from the user
+    printf("Enter a sentence (up to 100 characters): ");
+    fgets(sentence, sizeof(sentence), stdin);
+
+    // Write the sentence to the file
+    fprintf(fptr, "%s", sentence);
+    fclose(fptr);
+    printf("Sentence written to file successfully.\n");
+}
+
+int main() {
+    writeToFile();
+    return 0;