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- Users: GoAskAlice
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Kernighan and Richie problem
I only know this from experience - when I was working on a large file and allocating memory I received a segmentation fault because I ran out of memory. I am only a beginner with C (started last week) but this is the problem I had when working with large files.- GoAskAlice
- Post #2
- Forum: C
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Read Input Into Array
Sorry, argc will equal TWO if a command line parameter was passed to the program.- GoAskAlice
- Post #3
- Forum: C
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Read Input Into Array
#include <stdio.h> int main( int argc, char *argv[] ) { if( argc == 0 ) { puts( "No command line available." ); } else { printf( "The program now running: %s\n", argv[0]); if ( argc == 1 ) { puts( "No arguements received on the command line." ); } else { puts( "The command...- GoAskAlice
- Post #2
- Forum: C
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calloc error under C++ compiler (works fine with GCC)
>> or will I have to modify the code to get it to work? >Visual studio will compile C just fine so long as you name >your source files with the .c extension. >Or use these flags >/Tc<source file> compile file as .c >/Tp<source file> compile file as .cpp >/TC compile all files as .c >/TP compile...- GoAskAlice
- Post #8
- Forum: C
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calloc error under C++ compiler (works fine with GCC)
Thanks for the confirmation on the error. I do not feel ready yet to move on to C++ as I am still learning C. I thought I could compile C code in C++ and that C++ was just C with more libraries. I have a C compiler now for windows so I can write code for both Linux and Windows. Thanks for...- GoAskAlice
- Post #7
- Forum: C
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calloc error under C++ compiler (works fine with GCC)
http://www.cs.virginia.edu/~lcc-win32/ This is a free c compiler for windows. The original program went through without a error. Thanks for the heads up on the compiler issue. I thought C++ was 'backwards compatible' to C *smiles*- GoAskAlice
- Post #4
- Forum: C
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calloc error under C++ compiler (works fine with GCC)
When I transferred the code to the laptop and got the error I modified it completely to try and get it to work. If I remember correctly the error was something to do with void* to person* conversion. I was also curious to know if C code compiles under C++. I have a copy of Visual Studio 6 with...- GoAskAlice
- Post #3
- Forum: C
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calloc error under C++ compiler (works fine with GCC)
I am wondering why this code caused an error in C++ compiler under Windows when it compiles fine under Linux with GCC. typedef struct {int key; int digit; char string[24];}person; person *txPtr; if( (txPtr = calloc( store, sizeof(person) )) == NULL) { printf("txPtr:Insufficient memory\n")...- GoAskAlice
- Thread
- Replies: 8
- Forum: C
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How to pull one character from file?
Hey, I cant express how happy that code example has made me. Now I have a working example of fputs and fputc that actually does what it is supposed to do *big smiles* See, I am trying to create a list of all the unique numbers within a range - its a long story - but when I tried to do it in...- GoAskAlice
- Post #7
- Forum: C
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How to pull one character from file?
*smiles* @ over use of 8 Thanks for the info. It helps a little bit. In fact, it was just now when I kinda figured it out. Using fgetc and fputc I was trying to input a whole string "12345678" (hence the 8's in code) But like, I realised I am only inputting one char. When it came to reading...- GoAskAlice
- Post #4
- Forum: C
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How to pull one character from file?
#include <stdio.h> #include <stdlib.h> int main() { FILE *fp; char *s = "12345678"; long t = atol(s); printf("%ld\n",t); fp = fopen( "dbat", "w" ); fputc(*s,fp); fclose( fp ); fp = fopen( "dbat", "r" ); int c; int cnt = 0; char buffer[8]; while (cnt < 8) { c = fgetc( fp ); buffer[cnt++]...- GoAskAlice
- Post #2
- Forum: C
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How to pull one character from file?
Gosh, this sounds so easy! But, I am having serious problems. I wrote a file using fwrite to record 9 number sequences of 8 digits each in length. No seperators, just a long line of digits went into the file. Now, I want to pull a single digit from the file using fread but it really wont let...- GoAskAlice
- Thread
- Replies: 7
- Forum: C
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Segmentation fault with File I/O
No worries, I figured it out. The problem was with the fread() function. Basically, I was asking it to read 8 times the data inside the array 'a'. So, like, instead of; readcount = fread( a, sizeof( a ), 8, fp); I used; readcount = fread( a, sizeof( a ), 1, fp); And this extracted all the...- GoAskAlice
- Post #2
- Forum: C
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Segmentation fault with File I/O
Basically, I am learning C under Linux. What I am attempting is fwrite and fread functions on a file. The write program works without fault, but when I try and read the data back from the file, the data is displayed, but then at the end of it all it states 'Segmentation fault'. So, here is the...- GoAskAlice
- Thread
- Replies: 3
- Forum: C
