Possible Duplicate: C programming, why does this large array declaration produce a segmentation fault? This is my first time here so sorry if I break some rules or if this has been answered before. I recently made a C program in which I had a matrix of char buff[NR][1024*1024]; I needed NR = 128. So the program would alocat...
Hi all, I would like to do some "inline" assemly programming in Sparc and I am wondering how I can do that with register passing. Best to explain my issue with a small example int main() { int a = 5; int b = 6; int res; asm_addition(a,b); printf("Result: %d\n", res); return(0); } // My assembler addition .global...
I am using pinvoke to call functions from sslscan tool based on openssl; I checked by hit and trial that where exception is occuring is due to memset. It runs fine when i run it natively in VS.but using pinvoke causes this exception in c#.Its System.AccessViolation Exception. These are the declarations: struct sslCheckOptions options;...
I just downloaded curl and managed to build a programe with it. What I don't understand is why it requires both curllib.lib and curllib.dll ? In my opinion either curllib.lib or curllib.dll should be enough, why both? Also I've searched through the source but doesn't find anywhere it uses dlopen to load curllib.dll, so why is curllib....
I made a program to find if a number belongs to fibonacci series or not and if it does whats its position.Whenever i type a number the if Condition goes wrong. #include<stdio.h> #include<conio.h> #include<math.h> void main(void) { int i,x=1,y=1,z,num; clrscr(); printf("Enter a number to find in fibonacci series:"); scanf...
I created a very simple progam whith a menu, that take a value, then memorize it into the local variable value, and finally with the second option the progam prints the value. my question is: Why does the program work only if I add an "h" to the scanf parameter? In other words: what kind of relation there is between scanf() and my loca...
Even though OOP uses objects and data encapsulation, the code still writes out like a procedure. So what makes OOP loose the procedural label? Is it just because it is considered "high-level"? Thank You. ...
Hi, I have a method like this: - (CGPoint) _convertCGPointCT2UIKit:(CGPoint)ctPoint{ CGPoint uikitPoint = CGPointMake(ctPoint.x + INITIAL_HORIZ_OFFSET, self.bounds.size.height - ctPoint.y - INITIAL_VERT_OFFSET); return uikitPoint; } Is there any way I can make this a macro? I tried this but I get errors like "; expected b...
In c if I wanted to search a string for a particular character I can just do the following char *p; p = (char *)strchr(buffer,'('); if(p){ .... but what if I want to search for more than one character (or a character range) for example "any digit". I know I could do something like char *p=0; char *i; for(i=buffer;*i!='\0';i++){ ...
I'm making a program that displays some info in ncurses, and then opens vim (using system) to allow the user to edit a file. After vim is exited, though, the ncurses screen won't redraw. refresh and wrefresh don't do anything, resulting in the complete trashing of my beautiful menu. So, I get sent back to the command line. The menu i...
Hey Guys, I'm hoping someone will be able to help troubleshoot what I think is a linker script issue. I'm encountering a strange problem after adding a call to a new function. Without the function call, my object files link correctly, however, with the new function call added, I get an undefined reference to a symbol from another object...
I have just been bitten by issue described in SO question Binding int64 (SQL_BIGINT) as query parameter causes error during execution in Oracle 10g ODBC. I'm porting a C/C++ application using ODBC 2 from SQL Server to Oracle. For numeric fields exceeding NUMBER(9) it uses __int64 datatype which is bound to queries as SQL_C_SBIGINT. Appa...
I am using the cstdio (stdio.h) to read and write data from binary files. I have to use this library due to legacy code and it must be cross-platform compatible with Windows and Linux. I have a FILE* basefile_ which I use to read in the variables configLabelLength and configLabel, where configLabelLength tells me how much memory to alloc...
I always use unsigned int for values that should never be negative. But today I noticed this situation in my code: void CreateRequestHeader( unsigned bitsAvailable, unsigned mandatoryDataSize, unsigned optionalDataSize ) { If ( bitsAvailable – mandatoryDataSize >= optionalDataSize ) { // Optional data fits, so add it to...
I'm trying to get GCC (or clang) to consistently use the SSE instruction for sqrt instead of the math library function for a computationally intensive scientific application. I've tried a variety of GCCs on various 32 and 64 bit OS X and Linux systems. I'm making sure to enable sse with -mfpmath=sse (and -march=core2 to satisfy GCCs requ...
Let's say I have a source file, say helper.c, which gets compiled into an object library (helper.a). Now, this uses functionality from many system libraries, so currently when I want to link helper.a into an executable, I end up having to list all the dependencies: gcc main.c helper.a -o my_app -lrt -lpthreads ... What's the common ap...
I'm trying to compile a code for bumper switches in my robot and i get this error:" Error - symbol 'tr' has multiple definitions." What does this mean? I'm painfully new to this... ...
Hi, I've got some structs to initialise, which would be tedious to do manually. I'd like to create a macro that will help me with it... but I'm not sure C preprocessor is good enough for this. I've got structs which represent menus. They consist of function pointers only: typedef uint8_t (*button_handler) (uint8_t); typedef void (*peda...
int a=5; printf("%d %d %d\n",a++,a++,++a); Output on Gcc : 7 6 8 Can someone please explain the answer. I apologize if this question has been repeated but i wasn't able to find it. Thanks!! ...
Everyone knows how awesome C language is and how much it sucks in text processing tasks. Given these facts. Regex definitely must be part of ISO C. But it isn't. I don't understand why? Are there people who think its not essential? ...