C - fprintf returning Access violation writing location 0x00246D1C
-1
So my fprintf and also my fputs aren't successfully writing in the file that I want. Here is the relevant code, thank you.
void print_stats(double max, double min, double avg, double sum)
FILE *paid = ("paid.txt", "w");
//paid = ("paid.txt", "w");
if (paid == NULL)
printf("Failed");
fputs("Test", paid);
fprintf(paid, "Max: %.2fnMin: %.2fnAverage: %.2fnTotal: %.2f",
max, min, avg, sum);
fclose(paid);
c
edited Nov 13 '18 at 7:28
Lennart
6,147125266
asked Nov 13 '18 at 3:08
Ryan MRyan M
84
add a comment |
-1
So my fprintf and also my fputs aren't successfully writing in the file that I want. Here is the relevant code, thank you.
void print_stats(double max, double min, double avg, double sum)
FILE *paid = ("paid.txt", "w");
//paid = ("paid.txt", "w");
if (paid == NULL)
printf("Failed");
fputs("Test", paid);
fprintf(paid, "Max: %.2fnMin: %.2fnAverage: %.2fnTotal: %.2f",
max, min, avg, sum);
fclose(paid);
c
edited Nov 13 '18 at 7:28
Lennart
6,147125266
asked Nov 13 '18 at 3:08
Ryan MRyan M
84
2
You are not implementing your NULL pointer check correctly. You are trying to write a string in read only data segment if i had to guess. you need to call fopen() instead of just () like your doing here.
– Bwebb
Nov 13 '18 at 3:11
add a comment |
-1
-1
-1
0
So my fprintf and also my fputs aren't successfully writing in the file that I want. Here is the relevant code, thank you.
void print_stats(double max, double min, double avg, double sum)
FILE *paid = ("paid.txt", "w");
//paid = ("paid.txt", "w");
if (paid == NULL)
printf("Failed");
fputs("Test", paid);
fprintf(paid, "Max: %.2fnMin: %.2fnAverage: %.2fnTotal: %.2f",
max, min, avg, sum);
fclose(paid);
c
edited Nov 13 '18 at 7:28
Lennart
6,147125266
asked Nov 13 '18 at 3:08
Ryan MRyan M
84
So my fprintf and also my fputs aren't successfully writing in the file that I want. Here is the relevant code, thank you.
void print_stats(double max, double min, double avg, double sum)
FILE *paid = ("paid.txt", "w");
//paid = ("paid.txt", "w");
if (paid == NULL)
printf("Failed");
fputs("Test", paid);
fprintf(paid, "Max: %.2fnMin: %.2fnAverage: %.2fnTotal: %.2f",
max, min, avg, sum);
fclose(paid);
c
c
edited Nov 13 '18 at 7:28
Lennart
6,147125266
asked Nov 13 '18 at 3:08
Ryan MRyan M
84
edited Nov 13 '18 at 7:28
Lennart
6,147125266
asked Nov 13 '18 at 3:08
Ryan MRyan M
84
edited Nov 13 '18 at 7:28
Lennart
6,147125266
edited Nov 13 '18 at 7:28
Lennart
6,147125266
edited Nov 13 '18 at 7:28
Lennart
6,147125266
6,147125266
asked Nov 13 '18 at 3:08
Ryan MRyan M
84
asked Nov 13 '18 at 3:08
Ryan MRyan M
84
asked Nov 13 '18 at 3:08
Ryan MRyan M
84
84
2
You are not implementing your NULL pointer check correctly. You are trying to write a string in read only data segment if i had to guess. you need to call fopen() instead of just () like your doing here.
– Bwebb
Nov 13 '18 at 3:11
add a comment |
2
You are not implementing your NULL pointer check correctly. You are trying to write a string in read only data segment if i had to guess. you need to call fopen() instead of just () like your doing here.
– Bwebb
Nov 13 '18 at 3:11
2
2
You are not implementing your NULL pointer check correctly. You are trying to write a string in read only data segment if i had to guess. you need to call fopen() instead of just () like your doing here.
– Bwebb
Nov 13 '18 at 3:11
You are not implementing your NULL pointer check correctly. You are trying to write a string in read only data segment if i had to guess. you need to call fopen() instead of just () like your doing here.
– Bwebb
Nov 13 '18 at 3:11
add a comment |
1 Answer
1
active
oldest
votes
4
You never actually opened the file:
FILE *paid = ("paid.txt", "w");
This evaluates ("paid.txt", "w") as an expression, with the comma operator discarding the left operand "paid.txt" and evaluating the right operand "w", and then assigning that to paid.
You need to call fopen here:
FILE *paid = fopen("paid.txt", "w");
answered Nov 13 '18 at 3:11
dbushdbush
102k13108144
man youre quick
– Bwebb
Nov 13 '18 at 3:12
2
@RyanM Glad I could help. Feel free to accept this answer if you found it useful.
– dbush
Nov 13 '18 at 3:35
1
@RyanM in your original code you also should consider what happens iffopenreturns NULL because the file cannot be opened. It is not going to end well..
– Jabberwocky
Nov 13 '18 at 7:39
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
4
You never actually opened the file:
FILE *paid = ("paid.txt", "w");
This evaluates ("paid.txt", "w") as an expression, with the comma operator discarding the left operand "paid.txt" and evaluating the right operand "w", and then assigning that to paid.
You need to call fopen here:
FILE *paid = fopen("paid.txt", "w");
answered Nov 13 '18 at 3:11
dbushdbush
102k13108144
man youre quick
– Bwebb
Nov 13 '18 at 3:12
2
@RyanM Glad I could help. Feel free to accept this answer if you found it useful.
– dbush
Nov 13 '18 at 3:35
1
@RyanM in your original code you also should consider what happens iffopenreturns NULL because the file cannot be opened. It is not going to end well..
– Jabberwocky
Nov 13 '18 at 7:39
add a comment |
4
You never actually opened the file:
FILE *paid = ("paid.txt", "w");
This evaluates ("paid.txt", "w") as an expression, with the comma operator discarding the left operand "paid.txt" and evaluating the right operand "w", and then assigning that to paid.
You need to call fopen here:
FILE *paid = fopen("paid.txt", "w");
answered Nov 13 '18 at 3:11
dbushdbush
102k13108144
man youre quick
– Bwebb
Nov 13 '18 at 3:12
2
@RyanM Glad I could help. Feel free to accept this answer if you found it useful.
– dbush
Nov 13 '18 at 3:35
1
@RyanM in your original code you also should consider what happens iffopenreturns NULL because the file cannot be opened. It is not going to end well..
– Jabberwocky
Nov 13 '18 at 7:39
add a comment |
4
4
4
You never actually opened the file:
FILE *paid = ("paid.txt", "w");
This evaluates ("paid.txt", "w") as an expression, with the comma operator discarding the left operand "paid.txt" and evaluating the right operand "w", and then assigning that to paid.
You need to call fopen here:
FILE *paid = fopen("paid.txt", "w");
answered Nov 13 '18 at 3:11
dbushdbush
102k13108144
You never actually opened the file:
FILE *paid = ("paid.txt", "w");
This evaluates ("paid.txt", "w") as an expression, with the comma operator discarding the left operand "paid.txt" and evaluating the right operand "w", and then assigning that to paid.
You need to call fopen here:
FILE *paid = fopen("paid.txt", "w");
answered Nov 13 '18 at 3:11
dbushdbush
102k13108144
answered Nov 13 '18 at 3:11
dbushdbush
102k13108144
answered Nov 13 '18 at 3:11
dbushdbush
102k13108144
answered Nov 13 '18 at 3:11
dbushdbush
102k13108144
102k13108144
man youre quick
– Bwebb
Nov 13 '18 at 3:12
2
@RyanM Glad I could help. Feel free to accept this answer if you found it useful.
– dbush
Nov 13 '18 at 3:35
1
@RyanM in your original code you also should consider what happens iffopenreturns NULL because the file cannot be opened. It is not going to end well..
– Jabberwocky
Nov 13 '18 at 7:39
add a comment |
man youre quick
– Bwebb
Nov 13 '18 at 3:12
2
@RyanM Glad I could help. Feel free to accept this answer if you found it useful.
– dbush
Nov 13 '18 at 3:35
1
@RyanM in your original code you also should consider what happens iffopenreturns NULL because the file cannot be opened. It is not going to end well..
– Jabberwocky
Nov 13 '18 at 7:39
man youre quick
– Bwebb
Nov 13 '18 at 3:12
man youre quick
– Bwebb
Nov 13 '18 at 3:12
2
2
@RyanM Glad I could help. Feel free to accept this answer if you found it useful.
– dbush
Nov 13 '18 at 3:35
@RyanM Glad I could help. Feel free to accept this answer if you found it useful.
– dbush
Nov 13 '18 at 3:35
1
1
@RyanM in your original code you also should consider what happens if
fopen returns NULL because the file cannot be opened. It is not going to end well..– Jabberwocky
Nov 13 '18 at 7:39
@RyanM in your original code you also should consider what happens if
fopen returns NULL because the file cannot be opened. It is not going to end well..– Jabberwocky
Nov 13 '18 at 7:39
add a comment |
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2
You are not implementing your NULL pointer check correctly. You are trying to write a string in read only data segment if i had to guess. you need to call fopen() instead of just () like your doing here.
– Bwebb
Nov 13 '18 at 3:11