Added last three homeworks

2025.02.21/a02.c

@@ -0,0 +1,63 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+#include "io_status.h"
+#include "array.h"
+#include "solve.h"
+
+int main(int argc, char * argv[]) {
+	int task = 2;
+	int n = 0, m = 0;
+	char * name = 0;
+	char * s = 0;
+	char ** a = 0;
+	io_status res;
+	double t;
+
+	if (!(argc == 5 && sscanf(argv[1], "%d", &n) == 1 && sscanf(argv[2], "%d", &m) == 1))
+	{
+		printf("Usage: %s n m file string\n", argv[0]);
+		return 1;
+	}
+	name = argv[3];
+	s = argv[4];
+	a = (char **)malloc(n * sizeof(char **));
+	if (!a) 
+	{
+		printf("Can not allocate array len %d\n", n);
+		return ERROR_MEM;
+	}
+	res = read_array(a, n, name);
+	do {
+		switch (res) {
+			case SUCCESS:
+				continue;
+			case ERROR_OPEN:
+				printf("Can not open %s\n", name);
+				break;
+			case ERROR_READ:
+				printf("Can not read %s\n", name);
+				break;
+			case ERROR_MEM:
+				printf("Not enough memory\n");
+				break;
+		}
+
+		free(a);
+		return 3;
+	} while (0);
+
+	print_array(a, n, m);
+	t = clock();
+	res = t2_solve(a, n, s);
+	t = (clock() - t);
+	printf("New array:\n");
+	print_array(a, res, m);
+	printf("%s : Task = %d Result = %d Elapsed = %.2f\n",
+			argv[0], task, res, t);
+	free_array(a, res);
+	free(a);
+	a = 0;
+	return 0;
+}