I have read lots of programmers saying and writing when programming in C/C++ there are lots of issue related to memory. I am planning to learn to program in C/C++. I have beginner knowledge of C/C++ and I want to see some short sample why C/C++ can have issues with memory management. Please Provide some samples. ...
stored_name_t scan_construct_struct(void) { stored_name_t stn; int i=0; scanf("%c %lf %lf",&(stn.name) ,&(stn.(the_lower_limit)) ,&(stn.(the_upper_limit))); for(i=0; (scanf("%s", stn.(numbers[i])))!=0; ++i) ; return stn; } dene.c:37: error:...
I have a table of structures and this structures are 2 dimentional table of constants. can you teach me on how to get the values in the table of constants. (note following is just example) typedef struct { unsigned char ** Type1; unsigned char ** Type2; } Formula; typedef struct { Formula tformula[size]; } table;...
/*-> struct sam set_of_data[4] -<*/ int main (void) { int k = 0; for(i = 0; i < 4; ++i) { char nm; double thelow, theupp; double numbers[200]; scanf("%c %lf %lf", &nm, &thelow, &theupp); for (k = 0; scanf("%lf", &numbers[k]) != 0; ++k) ; set_of_data[i] = co...
1: /* 2: * File: xyn-playlist.c 3: * Author: Andrei Ciobanu 4: * 5: * Created on June 4, 2010, 12:47 PM 6: */ 7: 8: #include <dirent.h> 9: #include <glib.h> 10: #include <stdio.h> 11: #include <stdlib.h> 12: #include <sys/stat.h> 13: #include <unistd.h> 14: 15: /** 16: ...
I just came across that ANSI(ISO) ain't allowing nesting of function.. i want to know what makes gnu c ito implement this functionality(why such need arise). If a function say(a()) is define with in another function say(b()) then the lifetime of a() would be whole program? Will the storage for a() ll be created in a stack allocated to f...
I have the following: LPSTR email // Has data in it already LPSTR index=strchr(email,'@'); Now I want to Insert into a new string: LPSTR username the part of "email" from the beginning of the string to "index". For example: email="[email protected]" so username="roel" . Is there a function to do it quick or do I need to build ...
Right now I have a window with horizontal ad vertical scrollbars. I use these parameters to initialize it. //Set OGL Frame scroll bar SCROLLINFO inf; inf.cbSize = sizeof(SCROLLINFO); inf.fMask = SIF_PAGE | SIF_POS; inf.nPage = 20; inf.nPos = 30; It creates them in the center and I like their size, but when I scroll...
Hello, I load some data from file: GInputStream* input_stream; GFile *file = g_file_new_for_path(file_path); input_stream = g_file_read(file,generator_cancellable ,NULL); g_input_stream_read(input_stream, buffer, sizeof (buffer),generator_cancellable,error); How can i load g_input_stream_read function result to the GdkPixbufLoader o...
in C++ Primer 4th edition 2.1.1, it says "when assigning an out-of-range value to a signed type, it is up to the compiler to decide what value to assign". I can't understand it. I mean, if you have code like "char 5 = 299", certainly the compiler will generate asm code like "mov BYTE PTR _sc$[ebp], 43"(VC) or "movb $43, -2(%ebp)"(gc...
Here is my situation. I'm creating a drawing application using OpenGL and WinAPI. My OpenGL frame has scrollbars which renders the screen and modifies GlTranslatef when it gets a scroll message. The problem is wen I get too many shapes the scrollbar is less responsive since it cannot rerender it each and every time it gets a scroll messa...
I'm reading characters from the input. Once I find that I've moved to the next row, by checking that the character is a special token, I want the code to put that character back so that it is as if none of the characters on that row have been read. How do I do that? This is what I have so far. char nm; int i=0; double thelow, the...
Hi, I am trying to multiply square matrices in parallele with MPI. I use a MPI_Type_vector to send square submatrixes (arrays of float) to the processes, so they can calculate subproducts. Then, for the next iterations, these submatrices are send to neighbours processes as MPI_Type_contiguous (the whole submatrix is sent). This part is...
I am using the GPC Polygon Clipping lib and want to create a polygon programatically. I only see code for how to create one from a file. How can I do the initialization in my code? ...
I need to write such a define in C/C++ #define scanf( fscanf(inf, in order to replace each scanf( with fscanf(inf, literary But I do not know how... Thanks ...
I want to know how do we proceed to debug a STACKOVERFLOW issue on targets . I mean what are the steps we should follow to reach a conclusion. ...
scanf("%[^\n]\n",A[i]); /*that reads input line by line; example:first line is stored in A[0]*/ -> But I want read each element of line and send to struct fuction until the EOL (end of line) -> Explaining: In current line,read one data ,then send to struct funcion to hold,after then ,in for loop, re...
On the heels of a specific problem, a self-answer and comments to it, I'd like to understand if it is a proper solution, workaround/hack or just plain wrong. Specifically, I rewrote code: T x = ...; if (*reinterpret_cast <int*> (&x) == 0) ... As: T x = ...; if (*reinterpret_cast <volatile int*> (&x) == 0) ... with a volatile q...
Given a series of points, how could I calculate the vector for that line 5 pixels away? Ex: Given: \ \ \ How could I find the vector for \ \ \ \ \ \ The ones on the right. I'm trying to figure out how programs like Flash can make thick outlines. Thanks ...
I have this snippet of the code char *str = “123”; if(str[0] == 1) printf("Hello\n"); why I can't receive my Hello thanks in advance! how exactly compiler does this comparison if(str[0] == 1)? ...