C codes

Author: muskan09

natsum.c

@@ -0,0 +1,15 @@
+#include<stdio.h>
+int main()
+{
+int n,s;
+printf("enter a variable n");
+scanf("%d",&n);
+s=0;
+while(n!=0)
+{
+s=s+n;
+n--;
+}
+printf("sum of first n nos is %d",s);
+return 0;
+}