New C Programs Added

c_programs/Manoj_Athreya/leapyear.c

@@ -0,0 +1,24 @@
+//Manoj Athreya A
+#include <stdio.h>
+int main()
+{
+    int year;
+    printf("Enter a year: ");
+    scanf("%d",&year);
+    if(year%4 == 0)
+    {
+        if( year%100 == 0)
+        {
+            if ( year%400 == 0)
+                printf("%d is a leap year.", year);
+            else
+                printf("%d is not a leap year.", year);
+        }
+        else
+            printf("%d is a leap year.", year );
+    }
+    else
+        printf("%d is not a leap year.", year);
+
+    return 0;
+}

c_programs/Manoj_Athreya/palindrome.c

@@ -0,0 +1,21 @@
+//Manoj Athreya A
+#include <stdio.h>
+int main()
+{
+    int n, reversedInteger = 0, remainder, originalInteger;
+    printf("Enter an integer: ");
+    scanf("%d", &n);
+    originalInteger = n; 
+    while( n!=0 )
+    {
+        remainder = n%10;
+        reversedInteger = reversedInteger*10 + remainder;
+        n /= 10;
+    }
+    if (originalInteger == reversedInteger)
+        printf("%d is a palindrome.", originalInteger);
+    else
+        printf("%d is not a palindrome.", originalInteger);
+
+    return 0;
+}

c_programs/Manoj_Athreya/prime.c

@@ -0,0 +1,28 @@
+//Manoj Athreya A
+#include <stdio.h>
+int main()
+{
+    int n, i, flag = 0;
+    printf("Enter a positive integer: ");
+    scanf("%d", &n);
+    for(i = 2; i <= n/2; ++i)
+    {
+        if(n%i == 0)
+        {
+            flag = 1;
+            break;
+        }
+    }
+    if (n == 1) 
+    {
+      printf("1 is neither a prime nor a composite number.");
+    }
+    else 
+    {
+        if (flag == 0)
+          printf("%d is a prime number.", n);
+        else
+          printf("%d is not a prime number.", n);
+    }
+    return 0;
+}