Check that file exists: Difference between revisions

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 =={{header|C}}==
-{{works with|POSIX}}
+{{libheader|POSIX}}
 <lang c>#include <sys/types.h>
 #include <sys/stat.h>
+#include <stdio.h>
 #include <unistd.h>
-int main(){
+/* Check for regular file. */
-  struct stat file_stat;
+int check_reg(const char *path) {
-  if(stat("/tmp/test",&file_stat) ==0)
+	struct stat sb;
-    printf("file exists");
+	return stat(path, &sb) == 0 && S_ISREG(sb.st_mode);
-  else
+}
-    printf("no file lol");
-  return 0;
+/* 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;
 }</lang>