Exception Unhandled
In Visual Studio the fscanf gives me this error:
Unhandled exception at 0x6080D4EC (ucrtbased.dll) in Programação Imperativa.exe: 0xC0000005: Access violation writing location 0x00D0B000.
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <locale.h>
#include <stdlib.h>
#include <string.h>
struct estrutura
{
char nome[100];
float no1;
float no2;
float valor;
}v1, r1, r2, r3, r4;
int main(void)
{
FILE *circuito;
int x;
setlocale(LC_ALL, "Portuguese");
circuito = fopen("circuito.cir", "r");
if (circuito == NULL)
{
printf("Erro na abertura do ficheiro");
}
else
{
while ((x = fgetc(circuito)) != 'n');
fscanf_s(circuito, "%s %f %f %fn", v1.nome, &v1.no1, &v1.no2, &v1.valor);
printf("%s %lf %lf %lf n", v1.nome, v1.no1, v1.no2, v1.valor);
fscanf_s(circuito, "%s %f %f %fn", r1.nome, &r1.no1, &r1.no2, &r1.valor);
printf("%s %f %f %f n", r1.nome, r1.no1, r1.no2, r1.valor);
}
return 0;
}
c exception-handling
edited Jan 1 at 3:14
Shahnewaz
392311
asked Dec 31 '18 at 18:59
rui gomesrui gomes
21
add a comment |
In Visual Studio the fscanf gives me this error:
Unhandled exception at 0x6080D4EC (ucrtbased.dll) in Programação Imperativa.exe: 0xC0000005: Access violation writing location 0x00D0B000.
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <locale.h>
#include <stdlib.h>
#include <string.h>
struct estrutura
{
char nome[100];
float no1;
float no2;
float valor;
}v1, r1, r2, r3, r4;
int main(void)
{
FILE *circuito;
int x;
setlocale(LC_ALL, "Portuguese");
circuito = fopen("circuito.cir", "r");
if (circuito == NULL)
{
printf("Erro na abertura do ficheiro");
}
else
{
while ((x = fgetc(circuito)) != 'n');
fscanf_s(circuito, "%s %f %f %fn", v1.nome, &v1.no1, &v1.no2, &v1.valor);
printf("%s %lf %lf %lf n", v1.nome, v1.no1, v1.no2, v1.valor);
fscanf_s(circuito, "%s %f %f %fn", r1.nome, &r1.no1, &r1.no2, &r1.valor);
printf("%s %f %f %f n", r1.nome, r1.no1, r1.no2, r1.valor);
}
return 0;
}
c exception-handling
edited Jan 1 at 3:14
Shahnewaz
392311
asked Dec 31 '18 at 18:59
rui gomesrui gomes
21
OT: regarding:printf("Erro na abertura do ficheiro");error messages should be output tostderr, notstdoutand when the error indication is from a C library function, then should also output tostderrthe text reason the system thinks the error occurred. The function:perror()properly handles all of this. After handling an unrecoverable error, then should callexit( EXIT_FAILURE );(fromstdlib.h) For one reason, typically a return of 0 indicates 'success', but the code was NOT successful.
– user3629249
Jan 1 at 1:25
what input are you giving it? how much does it print out?
– Tom Tanner
Jan 1 at 17:24
add a comment |
In Visual Studio the fscanf gives me this error:
Unhandled exception at 0x6080D4EC (ucrtbased.dll) in Programação Imperativa.exe: 0xC0000005: Access violation writing location 0x00D0B000.
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <locale.h>
#include <stdlib.h>
#include <string.h>
struct estrutura
{
char nome[100];
float no1;
float no2;
float valor;
}v1, r1, r2, r3, r4;
int main(void)
{
FILE *circuito;
int x;
setlocale(LC_ALL, "Portuguese");
circuito = fopen("circuito.cir", "r");
if (circuito == NULL)
{
printf("Erro na abertura do ficheiro");
}
else
{
while ((x = fgetc(circuito)) != 'n');
fscanf_s(circuito, "%s %f %f %fn", v1.nome, &v1.no1, &v1.no2, &v1.valor);
printf("%s %lf %lf %lf n", v1.nome, v1.no1, v1.no2, v1.valor);
fscanf_s(circuito, "%s %f %f %fn", r1.nome, &r1.no1, &r1.no2, &r1.valor);
printf("%s %f %f %f n", r1.nome, r1.no1, r1.no2, r1.valor);
}
return 0;
}
c exception-handling
edited Jan 1 at 3:14
Shahnewaz
392311
asked Dec 31 '18 at 18:59
rui gomesrui gomes
21
In Visual Studio the fscanf gives me this error:
Unhandled exception at 0x6080D4EC (ucrtbased.dll) in Programação Imperativa.exe: 0xC0000005: Access violation writing location 0x00D0B000.
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <locale.h>
#include <stdlib.h>
#include <string.h>
struct estrutura
{
char nome[100];
float no1;
float no2;
float valor;
}v1, r1, r2, r3, r4;
int main(void)
{
FILE *circuito;
int x;
setlocale(LC_ALL, "Portuguese");
circuito = fopen("circuito.cir", "r");
if (circuito == NULL)
{
printf("Erro na abertura do ficheiro");
}
else
{
while ((x = fgetc(circuito)) != 'n');
fscanf_s(circuito, "%s %f %f %fn", v1.nome, &v1.no1, &v1.no2, &v1.valor);
printf("%s %lf %lf %lf n", v1.nome, v1.no1, v1.no2, v1.valor);
fscanf_s(circuito, "%s %f %f %fn", r1.nome, &r1.no1, &r1.no2, &r1.valor);
printf("%s %f %f %f n", r1.nome, r1.no1, r1.no2, r1.valor);
}
return 0;
}
c exception-handling
c exception-handling
edited Jan 1 at 3:14
Shahnewaz
392311
asked Dec 31 '18 at 18:59
rui gomesrui gomes
21
edited Jan 1 at 3:14
Shahnewaz
392311
asked Dec 31 '18 at 18:59
rui gomesrui gomes
21
edited Jan 1 at 3:14
Shahnewaz
392311
edited Jan 1 at 3:14
Shahnewaz
392311
edited Jan 1 at 3:14
Shahnewaz
392311
392311
asked Dec 31 '18 at 18:59
rui gomesrui gomes
21
asked Dec 31 '18 at 18:59
rui gomesrui gomes
21
asked Dec 31 '18 at 18:59
rui gomesrui gomes
21
21
OT: regarding:printf("Erro na abertura do ficheiro");error messages should be output tostderr, notstdoutand when the error indication is from a C library function, then should also output tostderrthe text reason the system thinks the error occurred. The function:perror()properly handles all of this. After handling an unrecoverable error, then should callexit( EXIT_FAILURE );(fromstdlib.h) For one reason, typically a return of 0 indicates 'success', but the code was NOT successful.
– user3629249
Jan 1 at 1:25
what input are you giving it? how much does it print out?
– Tom Tanner
Jan 1 at 17:24
add a comment |
OT: regarding:printf("Erro na abertura do ficheiro");error messages should be output tostderr, notstdoutand when the error indication is from a C library function, then should also output tostderrthe text reason the system thinks the error occurred. The function:perror()properly handles all of this. After handling an unrecoverable error, then should callexit( EXIT_FAILURE );(fromstdlib.h) For one reason, typically a return of 0 indicates 'success', but the code was NOT successful.
– user3629249
Jan 1 at 1:25
what input are you giving it? how much does it print out?
– Tom Tanner
Jan 1 at 17:24
OT: regarding:
printf("Erro na abertura do ficheiro"); error messages should be output to stderr, not stdout and when the error indication is from a C library function, then should also output to stderr the text reason the system thinks the error occurred. The function: perror() properly handles all of this. After handling an unrecoverable error, then should call exit( EXIT_FAILURE ); (from stdlib.h) For one reason, typically a return of 0 indicates 'success', but the code was NOT successful.– user3629249
Jan 1 at 1:25
OT: regarding:
printf("Erro na abertura do ficheiro"); error messages should be output to stderr, not stdout and when the error indication is from a C library function, then should also output to stderr the text reason the system thinks the error occurred. The function: perror() properly handles all of this. After handling an unrecoverable error, then should call exit( EXIT_FAILURE ); (from stdlib.h) For one reason, typically a return of 0 indicates 'success', but the code was NOT successful.– user3629249
Jan 1 at 1:25
what input are you giving it? how much does it print out?
– Tom Tanner
Jan 1 at 17:24
what input are you giving it? how much does it print out?
– Tom Tanner
Jan 1 at 17:24
add a comment |
1 Answer
1
active
oldest
votes
You are using fscanf_s with %s specifier incorrectly.
Unlike
fscanf...fscanf_s... requires the buffer size to be
specified for all input parameters of type c, C, s, S, or string
control sets that are enclosed in . The buffer size in characters is
passed as an additional parameter immediately following the pointer to
the buffer or variable.
Because there is one too few arguments passed, the address passed to accept a value for the final %f is undefined.
The compiler should have warned you about the missing buffer size argument.
answered Dec 31 '18 at 19:11
Weather VaneWeather Vane
26k52138
The compiler is not required to report errors in varargs. A lot of the time it can't.
– Mad Physicist
Jan 1 at 3:20
@MadPhysicist OP's Visual Studio warns about this.
– Weather Vane
Jan 1 at 17:26
TIL. I mostly use gcc.
– Mad Physicist
Jan 1 at 17:31
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
You are using fscanf_s with %s specifier incorrectly.
Unlike
fscanf...fscanf_s... requires the buffer size to be
specified for all input parameters of type c, C, s, S, or string
control sets that are enclosed in . The buffer size in characters is
passed as an additional parameter immediately following the pointer to
the buffer or variable.
Because there is one too few arguments passed, the address passed to accept a value for the final %f is undefined.
The compiler should have warned you about the missing buffer size argument.
answered Dec 31 '18 at 19:11
Weather VaneWeather Vane
26k52138
The compiler is not required to report errors in varargs. A lot of the time it can't.
– Mad Physicist
Jan 1 at 3:20
@MadPhysicist OP's Visual Studio warns about this.
– Weather Vane
Jan 1 at 17:26
TIL. I mostly use gcc.
– Mad Physicist
Jan 1 at 17:31
add a comment |
You are using fscanf_s with %s specifier incorrectly.
Unlike
fscanf...fscanf_s... requires the buffer size to be
specified for all input parameters of type c, C, s, S, or string
control sets that are enclosed in . The buffer size in characters is
passed as an additional parameter immediately following the pointer to
the buffer or variable.
Because there is one too few arguments passed, the address passed to accept a value for the final %f is undefined.
The compiler should have warned you about the missing buffer size argument.
answered Dec 31 '18 at 19:11
Weather VaneWeather Vane
26k52138
The compiler is not required to report errors in varargs. A lot of the time it can't.
– Mad Physicist
Jan 1 at 3:20
@MadPhysicist OP's Visual Studio warns about this.
– Weather Vane
Jan 1 at 17:26
TIL. I mostly use gcc.
– Mad Physicist
Jan 1 at 17:31
add a comment |
You are using fscanf_s with %s specifier incorrectly.
Unlike
fscanf...fscanf_s... requires the buffer size to be
specified for all input parameters of type c, C, s, S, or string
control sets that are enclosed in . The buffer size in characters is
passed as an additional parameter immediately following the pointer to
the buffer or variable.
Because there is one too few arguments passed, the address passed to accept a value for the final %f is undefined.
The compiler should have warned you about the missing buffer size argument.
answered Dec 31 '18 at 19:11
Weather VaneWeather Vane
26k52138
You are using fscanf_s with %s specifier incorrectly.
Unlike
fscanf...fscanf_s... requires the buffer size to be
specified for all input parameters of type c, C, s, S, or string
control sets that are enclosed in . The buffer size in characters is
passed as an additional parameter immediately following the pointer to
the buffer or variable.
Because there is one too few arguments passed, the address passed to accept a value for the final %f is undefined.
The compiler should have warned you about the missing buffer size argument.
answered Dec 31 '18 at 19:11
Weather VaneWeather Vane
26k52138
answered Dec 31 '18 at 19:11
Weather VaneWeather Vane
26k52138
answered Dec 31 '18 at 19:11
Weather VaneWeather Vane
26k52138
answered Dec 31 '18 at 19:11
Weather VaneWeather Vane
26k52138
26k52138
The compiler is not required to report errors in varargs. A lot of the time it can't.
– Mad Physicist
Jan 1 at 3:20
@MadPhysicist OP's Visual Studio warns about this.
– Weather Vane
Jan 1 at 17:26
TIL. I mostly use gcc.
– Mad Physicist
Jan 1 at 17:31
add a comment |
The compiler is not required to report errors in varargs. A lot of the time it can't.
– Mad Physicist
Jan 1 at 3:20
@MadPhysicist OP's Visual Studio warns about this.
– Weather Vane
Jan 1 at 17:26
TIL. I mostly use gcc.
– Mad Physicist
Jan 1 at 17:31
The compiler is not required to report errors in varargs. A lot of the time it can't.
– Mad Physicist
Jan 1 at 3:20
The compiler is not required to report errors in varargs. A lot of the time it can't.
– Mad Physicist
Jan 1 at 3:20
@MadPhysicist OP's Visual Studio warns about this.
– Weather Vane
Jan 1 at 17:26
@MadPhysicist OP's Visual Studio warns about this.
– Weather Vane
Jan 1 at 17:26
TIL. I mostly use gcc.
– Mad Physicist
Jan 1 at 17:31
TIL. I mostly use gcc.
– Mad Physicist
Jan 1 at 17:31
add a comment |
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OT: regarding:
printf("Erro na abertura do ficheiro");error messages should be output tostderr, notstdoutand when the error indication is from a C library function, then should also output tostderrthe text reason the system thinks the error occurred. The function:perror()properly handles all of this. After handling an unrecoverable error, then should callexit( EXIT_FAILURE );(fromstdlib.h) For one reason, typically a return of 0 indicates 'success', but the code was NOT successful.– user3629249
Jan 1 at 1:25
what input are you giving it? how much does it print out?
– Tom Tanner
Jan 1 at 17:24