1 files changed, 48 insertions, 0 deletions

diff --git a/4/10.c b/4/10.c
new file mode 100644
index 0000000..baa6546
--- /dev/null
+++ b/4/10.c
@@ -0,0 +1,48 @@
+#include <stdio.h>
+#include <string.h>
+
+#define MAXOP 100
+#define MAXLINE 1000
+
+#define NUM '0'
+#define FUN '1'
+#define ASG '2'
+#define VAR '3'
+
+int getop(char[]);
+void push(double);
+double peek();
+double pop();
+void clear();
+
+int main(int argc, char *argv[]) {
+  int type;
+  char s[MAXOP];
+
+  while (type == getop(s)) {
+    switch (type) {
+    case NUM:
+      break;
+    case '+':
+      break;
+    case '-':
+      break;
+    case '*':
+      break;
+    case '/':
+      break;
+    case '%':
+      break;
+    case FUN:
+      break;
+    case ASG:
+      break;
+    case VAR:
+      break;
+    default:
+      printf("error: unknown command %s\n", s);
+    }
+  }
+
+  return 0;
+}
\ No newline at end of file