diff --git a/arithematic.c b/arithematic.c
new file mode 100644
index 0000000..5bc7fe5
--- /dev/null
+++ b/arithematic.c
@@ -0,0 +1,21 @@
+#include<stdio.h>
+#include<conio.h>
+void main()
+{
+int x,y,a,s,m,mod;
+float d;
+clrscr();
+printf("enter two numbers:");
+scanf("%d%d",&x,&y);
+a=x+y;
+s=x-y;
+m=x*y;
+mod=x%y;
+d=(x/y);
+printf("addition=%d\n",a);
+printf("substraction=%d\n",s);
+printf("multiplication=%d\n",m);
+printf("modulus=%d\n",mod);
+printf("division=%f\n",d);
+getch();
+} 
\ No newline at end of file
diff --git a/info.c b/info.c
new file mode 100644
index 0000000..0d21d1c
--- /dev/null
+++ b/info.c
@@ -0,0 +1,16 @@
+#include<stdio.h>
+int main()
+{
+int rn;
+char n[100],h[100],b[100];
+printf("enter name=");
+gets(n);
+printf("enter branch=");
+gets(b);
+printf("hobbies=");
+gets(h);
+printf("enter regd.number=");
+scanf("%d",&rn);
+printf("enter\n\n name=%s\n regd.number=%d\n branch=%s\n hobbies=%s",n,rn,b,h);
+ return 0;
+}
\ No newline at end of file
diff --git a/leap.c b/leap.c
new file mode 100644
index 0000000..078376c
--- /dev/null
+++ b/leap.c
@@ -0,0 +1,18 @@
+#include<stdio.h>
+#include<conio.h>
+void main()
+{
+int y;
+clrscr();
+printf("enter any year:");
+scanf("%d",&y);
+if(y%4==0||y%100==0)
+{
+printf("leap year");
+}
+else
+{
+printf("not a leap year");
+}
+getch();
+}
\ No newline at end of file
diff --git a/maximum.c b/maximum.c
new file mode 100644
index 0000000..49034b5
--- /dev/null
+++ b/maximum.c
@@ -0,0 +1,14 @@
+#include<stdio.h>
+#include<conio.h>
+void main()
+{
+int num1,num2;
+clrscr();
+printf("enter the numbers to find maximum:");
+scanf("%d%d",&num1,&num2);
+if(num1>num2)
+printf("%d is maximum",num1);
+else
+printf("%d is maximum",num2);
+getch();
+} 
\ No newline at end of file
diff --git a/oddeven.c b/oddeven.c
new file mode 100644
index 0000000..0bd1d1f
--- /dev/null
+++ b/oddeven.c
@@ -0,0 +1,19 @@
+#include<stdio.h>
+#include<conio.h>
+void main()
+{
+int num;
+clrscr();
+printf("enter any number to check even or odd:");
+scanf("%d",&num);
+switch(num%2)
+{
+case 0:
+printf("number is even");
+break;
+case 1:
+printf("number is odd");
+break;
+}
+getch();
+}