Done with the project!

factorial.c

@@ -8,20 +8,25 @@
  */
 int factorial (int n) {
     // ADD CODE HERE
-    return 0; // EDIT THIS
+    int i, factorial;
+    factorial = 1;
+    for (i=1;i<=n;i++){
+    	factorial = factorial * i;
+	}
+    return factorial; // EDIT THIS
 }
 
 
 
 int main(void) {
 
     int k=5;
-
+	
     printf("%d! = %d\n", k,factorial(k));
     k = 8;
     printf("%d! = %d\n", k,factorial(k));
     k = 10;
     printf("%d! = %d\n", k,factorial(k));
 
     return 0;
-}
+}

fibonacci.c

@@ -17,9 +17,15 @@
  *      fibonacci(8); //21
  */
 int fibonacci(int k) {
-    //WRITE CODE HERE
-
-    return 0; // EDIT THIS
+    int t1 = 0, t2 = 1, nextTerm = 0;
+	int i;
+    for (i = 1; i < k; i++) {
+        // Prints the first two terms.
+        nextTerm = t1 + t2;
+        t1 = t2;
+        t2 = nextTerm;
+    }
+    return nextTerm; // EDIT THIS
 }
 
 
@@ -33,4 +39,4 @@ int main(void) {
     printf("Fibonacci at %d is %d\n", k, fibonacci(k));
 
     return 0;
-}
+}

sum.c

@@ -14,9 +14,14 @@
  *    series(3,6); //  returns 18. coz, 3 + 4 + 5 + 6
  */ 
 int series(int a, int b){
+	int sum;
     //Write code here
+    int i;
+    for (i=a;i<=b;i++){
+    	sum = sum + i;
+	}
 
-    return 0; //EDIT THIS
+    return sum; //EDIT THIS
 }
 
 
@@ -30,4 +35,4 @@ int main(void) {
     printf("The sum from %d to %d is %d\n",a,b,series(a,b));
 
     return 0;
-}
+}