Check that file exists: Difference between revisions

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@@ Line 195: / Line 195: @@
     printf("no file lol");
   return 0;
+}</lang>
+Or use this way
+<lang c>#include<stdio.h>
+#include<dir.h>
+#include<errno.h>
+signed int fexist(char*s){
+ FILE*f=fopen(s,"r");
+ if(!f)return (errno==ENOENT)-1;
+ fclose(f);
+ return 1;
+}
+signed int direxist(char*s){
+ if(chdir(s))return (errno==ENOENT)-1;
+ return 1;
+}
+void report(char*name,signed int r){
+ char*s="might";
+ if(r>0)s="does";
+ else if(!r)s="does not";
+ printf("%s %s exist.\r\n",name,s);
+}
+void chkfile(char*s){
+ report(s,fexist(s));
+}
+void chkdir(char*s){
+ report(s,direxist(s));
+}
+int main(){
+ chkfile("input.txt");
+ chkfile("/input.txt");
+ chkdir("docs");
+ chkdir("/docs");
+ return 0;
 }</lang>