new files

Task/Check-that-file-exists/C/check-that-file-exists.c

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+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <unistd.h>
+
+/* Check for regular file. */
+int check_reg(const char *path) {
+	struct stat sb;
+	return stat(path, &sb) == 0 && S_ISREG(sb.st_mode);
+}
+
+/* Check for directory. */
+int check_dir(const char *path) {
+	struct stat sb;
+	return stat(path, &sb) == 0 && S_ISDIR(sb.st_mode);
+}
+
+int main() {
+	printf("input.txt is a regular file? %s\n",
+	    check_reg("input.txt") ? "yes" : "no");
+	printf("docs is a directory? %s\n",
+	    check_dir("docs") ? "yes" : "no");
+	printf("/input.txt is a regular file? %s\n",
+	    check_reg("/input.txt") ? "yes" : "no");
+	printf("/docs is a directory? %s\n",
+	    check_dir("/docs") ? "yes" : "no");
+	return 0;
+}