improved the code

misc/demonetization.c

@@ -4,20 +4,38 @@
 
 #include <stdio.h>
 
-int ways(int n, int a[], int k) {
+int ways(int n, int a[], int k)
+{
     if(n<0 || k<0) return 0;
     if(n == 0) return 1;
     if(k == 0) return 0;
     return ways(n, a, k-1) + ways(n-a[k-1], a, k);
 }
 
-int main() {
-    int m; scanf("%d", &m);
-    int coin[m], i; for(i=0; i<m; i++) scanf("%d", &coin[i]);
+int main()
+{
+    int m;
+    int t;
+    int n;
 
-    int t; scanf("%d", &t);
-    while(t--) {
-        int n; scanf("%d", &n);
+    printf("Number of coins? ");
+    scanf("%d", &m);
+    int coin[m], i;
+    for(i=0; i<m; i++)
+    {
+        printf("coin? ");
+        scanf("%d", &coin[i]);
+    }
+
+    printf("---- your requests --- \n");
+    while(1)
+    {
+        printf("amount? exit(0) ");
+        scanf("%d", &n);
+        if (!n)
+        {
+            break;
+        }
         printf("%d\n", ways(n, coin, m));
     }
     return 0;