How can i write the code to identify the smallest integer i entered and how many times it appeared in the list i key in? Can somebody please help? #include<stdio.h> #define constant-999 int main() { int num, count; printf("Enter a list of integers (-999 to stop) : "); while(scanf("%d", &num) != -999) ...
C/C++ would be good option to write some of the performance critical aspects of a Ruby Application. I know this is possible. I would like to know how to add C/C++ code into Ruby code; any other language for that matter. Are there any practical applications of this which you noticed in open source projects or else? ...
I am taking a course on computational geometry in the fall, where we will be implementing some algorithms in C or C++ and benchmarking them. Most of the students generate a few datasets and measure their programs with the time command, but I would like to be a bit more thorough. I am thinking about writing a program to automatically gen...
[Edit: It seems this is an issue on gcc versions prior to 4.4, I got confused because of a gcc bugzilla entry reporting it for 4.5 (latest). Sorry, I should've tested with more recent versions. Still, the problem is somewhat valid as most people don't run gcc 4.4+.] Is it possible to tell the compiler the variable used in a switch fits ...
The main() function in an avr-gcc program saves the register state on the stack, but when the runtime calls it I understand on a microcontroller there isn't anything to return to. Is this a waste of RAM? How can this state saving be prevented? ...
The evaluation order does matter a lot, so, is this something called non-referential-transparency? int i = 1; int counter(){ i = i + 1; return i; } int foo(int i, int j){ return i*2 + 3*j; } int main(){ printf("%d", foo(counter(), counter())); } ...
I made a program which removes spaces and makes a string upper case by preprocessor directives .its not changing to uppercase #include <stdio.h> #include <conio.h> # define TOUPPER(x) (x-32) void main(void) { int i,j; char str[100],*p; clrscr(); printf("Enter the string:\n"); gets(str); for(i=0; ;i++) { ...
Text file (or CSV) is: Data:,,,,,\n (but with 100 ","s) In C or C++ I would like to open the file and then fill in values between the ",". i.e.- Data:,1,2,3,4,\n I'm guessing that I need some sort of search to find the next comma, insert data, find the next comma insert, etc. I was looking at memchr() for a buffer and...
I have a legacy code implemented in C (not C++). I would like to be able to call a few methods in this C code from my C# code (on Windows). What would be the best approach to interface between the two language? Please note that the method in C is not stateless. We need to call two methods: initialization() => this will initialize the d...
Hi, So on Project Euler the Problem 4 states the following: A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 99. Find the largest palindrome made from the product of two 3-digit numbers. I have tried the following: #include <stdio.h> ...
Hello, I would like to use the GetVolumeInformation call to retrieve the name of a removable device. I can retrieve the name just fine and store into a TCHAR array variable szVolNameBuff. Here is my code for that: // Get Volume Information to check for NTFS or FAT TCHAR szFileSys[256]; TCHAR szVolNameBuff[256]; DWORD dwSerial ...
I'm wondering if simply compiling my msvc project with sse/sse2 will have any effect. I do for example vector normalization and dot product but I do these wth math, not any specific function. Is there like sse_dot() and sse_normalize() that I should be using to actualyy take advantage, or will the compiler know? Thanks ...
Hi, So as we all probably know, the atoi converts a char to a number. But, what do you do if you only want one of the array elements instead of the whole array? Please look at the following: for (h = 0; h < 5; h++) { num[h] = atoi(temp[h]); } Assume that num is an array of type int and that temp is and array of type char. This g...
I tried to use several implementations, but all of them had bugs. Search at SO gave me http://www-igm.univ-mlv.fr/~lecroq/string/node14.html - looks nice, but this implementation gave me wrong results - sometimes it doesn't found a string. I spent couple hours to find the bug. Following line looks fine: j += MAX(bmGs[i], bmBc[y[i + j]]...
I want to write a wrap for a DLL file, in this case for python. The problem is that the argument types are not the C standard ones. They have been typedef'end to something else. I have the header files for the DLL files... so I can manually track the original standard C type the argument type was typedef'ined to. But wanted a more syste...
I am currently writing a programming language in C/C++ as an exercise (but mostly for fun). At the moment it compiles into a list of commands that are then executed (kind of like a low-level API). Its working fantastically, however, I think it would be more exciting if instead of having a interpreter executable, having the language act...
When we build a programe,some symbols are to be resolved at link time(like those in a .lib), but some can be resolved at run time(those in a .dll), my doubt is that how does the compiler know about this, or how do we notify the compiler about this? ...
How do I print #include<conio.h> in C #include<stdio.h> #include<conio.h> void main() { printf("#include<conio.h>"); } How to get the output as #include<conio.h> you have to put getch(); and press Ctrl+f9 instead of alt+f5 ...
hi, char **r; r = (char **)malloc(10); the above allocation is enough?dont i need allocate for char *r through for loop?any can explain which one is right? ...
I have two arrays, say A and B with |A|=8 and |B|=4. I want to calculate the set difference A-B. How do I proceed? Please note that there are no repeated elements in either of the sets. Edit: Thank you so much everybody for a myriad of elegant solutions. Since I am in prototyping stage of my project, for now I implemented the simplest s...