How to fix Reading from a file?
-1
I have created a text file which contains:
CODE Name Atttack Cost Maintenance
0 Villager 0 20 +15
1 Axeman 1 30 -5
2 Bowman 2 40 -5
3 Scout 1 10 -0
4 Troll 4 50 -10
5 Dragon 6 100 -30
Code:
#include <stdio.h>
#include <stdlib.h>
int main() {
FILE * fptr; //Ρευμα
char ch;
fptr = fopen("UNITS.txt", "r");
if (fptr == NULL)
{
printf("Cannot open file n");
exit(0);
}
// Read contents from file
ch = fgetc(fptr);
while ((ch = fgetc(fptr)) != EOF){
printf("%c", ch);
}
fclose(fptr);
return 0;
}
I always get the message "cannot open file". Currently my file is on desktop, but I have tried to put the file in the directory where the executable file of the program is present.
c file-io
edited Dec 29 '18 at 16:58
Brian Tompsett - 汤莱恩
4,2031337101
asked Dec 29 '18 at 16:15
Rafail NicolaouRafail Nicolaou
1
|
show 1 more comment
-1
I have created a text file which contains:
CODE Name Atttack Cost Maintenance
0 Villager 0 20 +15
1 Axeman 1 30 -5
2 Bowman 2 40 -5
3 Scout 1 10 -0
4 Troll 4 50 -10
5 Dragon 6 100 -30
Code:
#include <stdio.h>
#include <stdlib.h>
int main() {
FILE * fptr; //Ρευμα
char ch;
fptr = fopen("UNITS.txt", "r");
if (fptr == NULL)
{
printf("Cannot open file n");
exit(0);
}
// Read contents from file
ch = fgetc(fptr);
while ((ch = fgetc(fptr)) != EOF){
printf("%c", ch);
}
fclose(fptr);
return 0;
}
I always get the message "cannot open file". Currently my file is on desktop, but I have tried to put the file in the directory where the executable file of the program is present.
c file-io
edited Dec 29 '18 at 16:58
Brian Tompsett - 汤莱恩
4,2031337101
asked Dec 29 '18 at 16:15
Rafail NicolaouRafail Nicolaou
1
2
Rather thanprintf("Cannot open file n");, tryperror("UNITS.txt"). you'll get a more useful error message.
– William Pursell
Dec 29 '18 at 16:16
Do you have a case difference in the file name?"UNITS.txt"v."units.txt"?
– chux
Dec 29 '18 at 16:20
1
When you open a file such as"UNITS.txt"your program will look for it in the current working directory. That may or may not be the one where the executable is located. If you are using an IDE such as VisualStudio, there is an option in the Debug project settings where you can choose the current working directory.
– rodrigo
Dec 29 '18 at 16:20
Try addingFILE * f; f = fopen("test.txt", "w"); fclose(f);and see where that file is created.
– chux
Dec 29 '18 at 16:21
3
Aside: Useint ch;, notchar ch;asfgetc(fptr)returns 257 different values.
– chux
Dec 29 '18 at 16:22
|
show 1 more comment
-1
-1
-1
I have created a text file which contains:
CODE Name Atttack Cost Maintenance
0 Villager 0 20 +15
1 Axeman 1 30 -5
2 Bowman 2 40 -5
3 Scout 1 10 -0
4 Troll 4 50 -10
5 Dragon 6 100 -30
Code:
#include <stdio.h>
#include <stdlib.h>
int main() {
FILE * fptr; //Ρευμα
char ch;
fptr = fopen("UNITS.txt", "r");
if (fptr == NULL)
{
printf("Cannot open file n");
exit(0);
}
// Read contents from file
ch = fgetc(fptr);
while ((ch = fgetc(fptr)) != EOF){
printf("%c", ch);
}
fclose(fptr);
return 0;
}
I always get the message "cannot open file". Currently my file is on desktop, but I have tried to put the file in the directory where the executable file of the program is present.
c file-io
edited Dec 29 '18 at 16:58
Brian Tompsett - 汤莱恩
4,2031337101
asked Dec 29 '18 at 16:15
Rafail NicolaouRafail Nicolaou
1
I have created a text file which contains:
CODE Name Atttack Cost Maintenance
0 Villager 0 20 +15
1 Axeman 1 30 -5
2 Bowman 2 40 -5
3 Scout 1 10 -0
4 Troll 4 50 -10
5 Dragon 6 100 -30
Code:
#include <stdio.h>
#include <stdlib.h>
int main() {
FILE * fptr; //Ρευμα
char ch;
fptr = fopen("UNITS.txt", "r");
if (fptr == NULL)
{
printf("Cannot open file n");
exit(0);
}
// Read contents from file
ch = fgetc(fptr);
while ((ch = fgetc(fptr)) != EOF){
printf("%c", ch);
}
fclose(fptr);
return 0;
}
I always get the message "cannot open file". Currently my file is on desktop, but I have tried to put the file in the directory where the executable file of the program is present.
c file-io
c file-io
edited Dec 29 '18 at 16:58
Brian Tompsett - 汤莱恩
4,2031337101
asked Dec 29 '18 at 16:15
Rafail NicolaouRafail Nicolaou
1
edited Dec 29 '18 at 16:58
Brian Tompsett - 汤莱恩
4,2031337101
asked Dec 29 '18 at 16:15
Rafail NicolaouRafail Nicolaou
1
edited Dec 29 '18 at 16:58
Brian Tompsett - 汤莱恩
4,2031337101
edited Dec 29 '18 at 16:58
Brian Tompsett - 汤莱恩
4,2031337101
edited Dec 29 '18 at 16:58
Brian Tompsett - 汤莱恩
4,2031337101
4,2031337101
asked Dec 29 '18 at 16:15
Rafail NicolaouRafail Nicolaou
1
asked Dec 29 '18 at 16:15
Rafail NicolaouRafail Nicolaou
1
asked Dec 29 '18 at 16:15
Rafail NicolaouRafail Nicolaou
1
1
2
Rather thanprintf("Cannot open file n");, tryperror("UNITS.txt"). you'll get a more useful error message.
– William Pursell
Dec 29 '18 at 16:16
Do you have a case difference in the file name?"UNITS.txt"v."units.txt"?
– chux
Dec 29 '18 at 16:20
1
When you open a file such as"UNITS.txt"your program will look for it in the current working directory. That may or may not be the one where the executable is located. If you are using an IDE such as VisualStudio, there is an option in the Debug project settings where you can choose the current working directory.
– rodrigo
Dec 29 '18 at 16:20
Try addingFILE * f; f = fopen("test.txt", "w"); fclose(f);and see where that file is created.
– chux
Dec 29 '18 at 16:21
3
Aside: Useint ch;, notchar ch;asfgetc(fptr)returns 257 different values.
– chux
Dec 29 '18 at 16:22
|
show 1 more comment
2
Rather thanprintf("Cannot open file n");, tryperror("UNITS.txt"). you'll get a more useful error message.
– William Pursell
Dec 29 '18 at 16:16
Do you have a case difference in the file name?"UNITS.txt"v."units.txt"?
– chux
Dec 29 '18 at 16:20
1
When you open a file such as"UNITS.txt"your program will look for it in the current working directory. That may or may not be the one where the executable is located. If you are using an IDE such as VisualStudio, there is an option in the Debug project settings where you can choose the current working directory.
– rodrigo
Dec 29 '18 at 16:20
Try addingFILE * f; f = fopen("test.txt", "w"); fclose(f);and see where that file is created.
– chux
Dec 29 '18 at 16:21
3
Aside: Useint ch;, notchar ch;asfgetc(fptr)returns 257 different values.
– chux
Dec 29 '18 at 16:22
2
2
Rather than
printf("Cannot open file n");, try perror("UNITS.txt"). you'll get a more useful error message.– William Pursell
Dec 29 '18 at 16:16
Rather than
printf("Cannot open file n");, try perror("UNITS.txt"). you'll get a more useful error message.– William Pursell
Dec 29 '18 at 16:16
Do you have a case difference in the file name?
"UNITS.txt" v. "units.txt"?– chux
Dec 29 '18 at 16:20
Do you have a case difference in the file name?
"UNITS.txt" v. "units.txt"?– chux
Dec 29 '18 at 16:20
1
1
When you open a file such as
"UNITS.txt" your program will look for it in the current working directory. That may or may not be the one where the executable is located. If you are using an IDE such as VisualStudio, there is an option in the Debug project settings where you can choose the current working directory.– rodrigo
Dec 29 '18 at 16:20
When you open a file such as
"UNITS.txt" your program will look for it in the current working directory. That may or may not be the one where the executable is located. If you are using an IDE such as VisualStudio, there is an option in the Debug project settings where you can choose the current working directory.– rodrigo
Dec 29 '18 at 16:20
Try adding
FILE * f; f = fopen("test.txt", "w"); fclose(f); and see where that file is created.– chux
Dec 29 '18 at 16:21
Try adding
FILE * f; f = fopen("test.txt", "w"); fclose(f); and see where that file is created.– chux
Dec 29 '18 at 16:21
3
3
Aside: Use
int ch;, not char ch; as fgetc(fptr) returns 257 different values.– chux
Dec 29 '18 at 16:22
Aside: Use
int ch;, not char ch; as fgetc(fptr) returns 257 different values.– chux
Dec 29 '18 at 16:22
|
show 1 more comment
1 Answer
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oldest
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Fixed i was using the wrong directory thanks.
answered Dec 29 '18 at 19:27
Rafail NicolaouRafail Nicolaou
1
add a comment |
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Fixed i was using the wrong directory thanks.
answered Dec 29 '18 at 19:27
Rafail NicolaouRafail Nicolaou
1
add a comment |
0
Fixed i was using the wrong directory thanks.
answered Dec 29 '18 at 19:27
Rafail NicolaouRafail Nicolaou
1
add a comment |
0
0
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Fixed i was using the wrong directory thanks.
answered Dec 29 '18 at 19:27
Rafail NicolaouRafail Nicolaou
1
Fixed i was using the wrong directory thanks.
answered Dec 29 '18 at 19:27
Rafail NicolaouRafail Nicolaou
1
answered Dec 29 '18 at 19:27
Rafail NicolaouRafail Nicolaou
1
answered Dec 29 '18 at 19:27
Rafail NicolaouRafail Nicolaou
1
answered Dec 29 '18 at 19:27
Rafail NicolaouRafail Nicolaou
1
1
add a comment |
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2
Rather than
printf("Cannot open file n");, tryperror("UNITS.txt"). you'll get a more useful error message.– William Pursell
Dec 29 '18 at 16:16
Do you have a case difference in the file name?
"UNITS.txt"v."units.txt"?– chux
Dec 29 '18 at 16:20
1
When you open a file such as
"UNITS.txt"your program will look for it in the current working directory. That may or may not be the one where the executable is located. If you are using an IDE such as VisualStudio, there is an option in the Debug project settings where you can choose the current working directory.– rodrigo
Dec 29 '18 at 16:20
Try adding
FILE * f; f = fopen("test.txt", "w"); fclose(f);and see where that file is created.– chux
Dec 29 '18 at 16:21
3
Aside: Use
int ch;, notchar ch;asfgetc(fptr)returns 257 different values.– chux
Dec 29 '18 at 16:22