start writing solver

io.h

 /* io.h */
-/* Last Change: 2019/05/21 (Tue) 13:55:21. */
+/* Last Change: 2019/05/21 (Tue) 14:01:43. */
 #ifndef _IO_H_
 #define _IO_H_
 
@@ -39,7 +39,4 @@ void read_problem(void);
 void convert_answer(void);
 void print_answer(void);
 
-//  関数avgのプロトタイプ宣言
-double avg(double,double);
-
 #endif // _IO_H_

main.c

 /* main.c */
-/* Last Change: 2019/05/21 (Tue) 13:57:57. */
+/* Last Change: 2019/05/21 (Tue) 14:03:16. */
 
 #include"io.h"
 
 int main(void){
 	read_problem();
 	// solver();
-	w=h=10; // for output
 	convert_answer();
 	print_answer();
 

solver.c

+/* solver.c */
+/* Last Change: 2019/05/21 (Tue) 14:03:02. */
+
+#include<stdio.h>
+/* #include<stdlib.h> */
+/* #include<string.h> */
+/* #include<limits.h> */
+/* #include<math.h> */
+/* #include<time.h> */
+
+void solver(void){
+	return;
+}
+

solver.h

+/* solver.h */
+/* Last Change: 2019/05/21 (Tue) 14:01:34. */
+#ifndef _SOLVER_H_
+#define _SOLVER_H_
+
+#define MAXSIZE 128
+
+void solver(void);
+
+#endif // _SOLVER_H_