19,876 Topics
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| | #include<stdio.h> int sum(int,int); int main() { int a=5; int b=6; int res; res=sum(a,b); printf("\n%d\n%d\n",a,b); printf("%d",res); } int sum(int x,int y) { x=x+1; y=y+3; return y; } This is a sample program where my a and b values didint change and the result of modified y (ie)9 is returned back to …  |
 | EDIT: Please note, as I write this, the post is now 6 years old and might have some outdated information. I'd personally recommend beginners start with "Learn C the hard way" by Zed and this book since I have heard good things about them. Reading the FAQ put together by … |
| | int main() { unsigned int i=65000; while ( i++ != 0 ); printf("%d",i); return 0; } The output for this program is 1 can anyone explain me how I got this output? Thanks in advance.  |
 | The bubble sort is slow and I thought it would be interesting to visualize the progress as it sorts an array of integers. |
| | int main() { int a=10; printf("%d",a); return 0; or return a; } # 1ts question:In the program Why you used 0 in return 0 ; and 2nd question : if you use a in return a; then it also print the correct output but why ? # |
| | Hello everyone! this is a code to reverse strings of a array of char ptr. I am passing the char* array, dynamically allocating memory to reverse and link with the char* array. The print it gives in the str_rev() are perfect. But when I print same thing in main(), it … |
| | Hello Everyone, I got this question in some book. As per question we need to find a substring in a array of char* and replace it with another string. The program I wrote doesn't work. I tried using strcpy as well char by char. Please help me to figure out … |
| | main() { int i=5; printf("%d%d%d%d%d",i++,i--,++i,--i,i); } Answer: 45545 Thanks in advance.  |
| | Hi! I have an assignment. A C++ program. But sad to say I dont know how. -Write a program that multiplies two numbers withou using (*symbol). (Use for loops) Please help me! |
| | I want to ask how to pass the '30','31','32' to SQL WHERE IN clause For example EXEC SQL DECLARE abcd CURSOR FOR SELECT Consignment FROM Transaction WHERE order_type IN (:dest) where dest will hold the value '30','31','32'. I have tried as above example but it is not working SQL did … |
| | I was asked to write a program to eliminate the reoccurrence of numbers in an interview? For example if I give the input as 2233555697 then the output should be 235697  |
| | I am trying to do simple math in c using a microcontroller. The C toolset uVision that I have does not have printf scan etc functions. In any case the code below reads in two parameters p1, p2 from the user over a serial port usig a simple routine GetHexByte …  |
| | Hey Guys! I Have A Device With a Small LCD Module Like This (http://tiny.cc/gva5pw). And I Have to Write a Code in C To Display Text on The Module ! I Also Have To Run Program in a Minimal Modified Version of FreeBSD ! So Far I Havent Started to … |
| | I have made this code. It is working good. Can anyone please help me to make it more optimised? Here is the code. /* ∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑∑ Author: Mayukh Sarkar Email: mayukh2012@hotmail.com Country: India License: GPL public Copyright ® © ¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬ */ #include <stdio.h> #include <stdlib.h> static int size = 0; typedef … |
| | The problem is while i execute my code the function modifiko_note(); doesn't work in a proper way. It execute with errors.`` #include<stdio.h> #include<stdlib.h> #include<string.h> #include<sys/stat.h> #include<conio.h> struct student{ char emri[20]; char mbiemri[20]; int nota[100]; int grupi; }stud; struct lendet{ char emri[20]; int kredite; }lenda; FILE *bin; FILE *file; void regjistro_lende(); … |
| | this line returns `lvalue required as increment operand` error message with gcc-4.7 hwrcolor c; u8 *dest; *(((unsigned char *)dest)++) = c; I changed it hwrcolor c; u8 *dest; *((unsigned char *)dest) = c; dest += sizeof(c); and u32 * u32Dest; hwrcolor c; u8 *dest; u32Dest = ((u32 *)dest); *u32Dest = … |
| | I have written a Makefile which compiles my mini-os with another application. I have to use -nostdioc and -nostdlib to compile them, but the problem is, that application is using stdio/stdlib functions and when I run my Makefile I get the error message that the functions used by my application … |
| | Hello, I am caputing sound from a codec using a microcontroller and sending it over to the laptop using a serial port .Now I want to use this buffer of values to regenerate the captured sound in Windows using C/C++. I have no idea about how to do it?Can some … |
| | Hi community, I want to prevent user input character in Edit Control on a dialog. I think i need to catch WM_Char to prevent showing the character, but i do not know how to do it. Thanks for your help.  |
| | Hi everyone, I’m beginner and I need a little help. I have to make RPN (postfix) calculator using stack which is implemented by singly linked list in C. Now I found that but in C++ and I’m having trouble translating it to C. Can you help me getting things to …  |
| | Swap 2 number without using third variable code do not use temp variable for swapping if the code was useful please let me know [code]#include <stdio.h> void main() { int a,b; printf("enter number1: ie a"); scanf("%d",a); printf("enter number2:ie b "); scanf("%d",b); printf(value of a and b before swapping is a=%d,b=%d"a,b); … |
 | #include <stdio.h> int main(){ int i,j,k=1; int loop_count = 10; for(i=1;i<loop_count;i++){ if( i > 1){ for(j=0;j<i+k;j++){ if( i == 2 ) printf("*"); else{ if( j%k == 0) printf("*"); else printf(" "); } } k++; }else printf("*"); printf("\n"); } return 0; } |
| | Hello everyone. I am new to c++ and I just wrote a program. I am on linux so just saying. This is the code. What keeps happening is all the commands just keep coming. here is an example. Welcome to the Calculator. Please enter your operation. addition Please enter your … |
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| | Hey, I need to create a war card game. I have a problem with linked list - I read about it but still I have a problem with writing the code. I made a deck of shuffled card and now I need to sort it out between 2 players... so … |
| | [Click Here](https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xta1/v/t1.0-9/11062032_934388023272240_5568390880935797936_n.jpg?oh=74464ac9ad5590c8595312bd6737b780&oe=55FC4564&__gda__=1442907117_9cbf40a25436808a834b2bf63856957b) 2<=n<=15  |
| | Doing simple domain name search Just enter sometimes Segmentation fault I really do not know how to solve this problem But some can be found ip i not idea Read what information can solve this problem I'm sorry my English is very poor |
| | Hi. I need to write a program that finds the shortest route in directed graph. Please look at the picture. [Click Here](https://goo.gl/photos/uRdTfp9pDrAobun87) Here is my code: #include <iostream> using namespace std; const int N = 10; struct elem { char key; elem *next; } *g[N]; void init(elem *g[N]) { for … |
| | Representing the list may or may not matter for a specific algorithm, but what does a list has to do with a stack/queue?  |
| | I am getting this error. LINK : warning LNK4098: defaultlib "LIBCMT" conflicts with use of other libs; use /NODEFAULTLIB:library serialtest.obj : error LNK2001: unresolved external symbol "void __cdecl fastICA(double * *,int,int,int,double * *,double * *,double * *,double * *)" (?fastICA@@YAXPAPANHHH0000@Z) Debug/vctest.exe : fatal error LNK1120: 1 unresolved externals Error executing … |
 | I am trying to make a MP3 player using axWindowsMediaPlayer, and I am running into some issues. When the song stops playing, it is supposed to go on to the next song in the list, but instead it locks up. I don't know how to fix this, I tried googling … |
| | I get this error in a c code of mine error C2440: '=' : cannot convert from 'LPVOID' to 'unsigned char * if((buffer = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, totalBufferSize )) == NULL) { fprintf(stderr, "Memory allocation error\n"); ExitProcess(1); } and even this error C2440: '=' : cannot convert from 'unsigned char … |
 | Hey guys, I am debugging some random files trying to get into gdb and I came accross a question how many machine instructions are used for this : `double x, dx, ans;` I guess I could see based on memory addresses and the size of double that 3 variables are … |
| | hello there let me explain my work i have a file i read from it the data after that i try to get the best vertex that it's max(degree/weight) when i find it i put it's neighbors into the glist and i put it into blist and delete both of … |
 | Why is it that whenever I use the getline function I get an error during execution. To clarify... I have this code; cout<<"Enter your string: "; getline(cin, myString); //line 1 cout<<"Enter your name: "; getline(cin, myName); //line 2 cout<<"Age: "; cin>>age; //line 3 output: ____________________________ Enter your string: gfgfkjhjkhgg Enter … |
| | Hi all, i have been working on the Dijkstra's code for a couple of weeks and i am now puzzled on how to do it this is my code for it so far void d_run(Table T, Graph G){ Vertex V, W; V = 0; W = 0; for (int i … |
| | I found the following logic for binary search from the standard book i feel it fails in some /* binsearch: find x in v[0] <= v[1] <= ... <= v[n-1] */ int binsearch(int x, int v[], int n) { int low, high, mid; low = 0; high = n - … |
| | Hi. i need to build an expression tree from a string and i dont get how to do it. for exapmle: str[20]="( (2 + 5) * (8 / 2))";  can some one help me? thanks. |
| | Hello guys can anyone please help me in a problem relating to file. The problem is that I want to use `fgets` on a c file from another c file and increment a the counter every time to get the number of lines and I also want to put the … |
| | Hi all, Suppose if I write two programs of same functionality but with different methods and want to measure the run time efficiency how do i know? I mean to say i want to measure the run time of each code how do i do it? Should i check the … |
| | pls can i get a code for the following example 1 ** 234 **** 56789 ****** |
| | I wrote a program for converting a file from PPM format to ASCII art. Every pixel of the input image is converted to greyscale by calculating the average of red green and blue values ((red + green +blue)/3). The upgrade of the basic version is that I calculate the average … |
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| | I am very confused with the following thing #include <stdio.h> int main(void) { int array[3]={1,2,3}; int (*p)[3]; p = &array; /* Here p contians address of the array */ return 0; } Here p contains the adddress of the array. I am very confused why *p does not give me … |
| | Hi, I have the following map : listOfPolicyRuleInfo CPCRF::m_mlistOfCliConfiguredPolicyRules; where typedef map<string, PolicyRuleInfo> listOfPolicyRuleInfo; where PolicyRuleInfo is a struct struct PolicyRuleInfo{ BearerQoSInfo stBearerQoS; TFTInfo stTFTInfo; PolicyRuleInfo(){}; PolicyRuleInfo( BearerQoSInfo const& qos, TFTInfo const& tft) : stBearerQoS(qos), stTFTInfo(tft) { } }; listOfPolicyRuleInfo m_mlistOfCliConfiguredPolicyRules = boost::assign::map_list_of("PolicyRule_Fred", PolicyRuleInfo( BearerQoSInfo(9), TFTInfo())) ("PolicyRule_Voice_C", PolicyRuleInfo( BearerQoSInfo(5), TFTInfo())) …  |
| | too many new and intermediate users of C attempt to use the command [icode]fflush(stdin)[/icode] to "flush the input buffer". this is patently wrong. the rule is (and click if you don't believe me) : [URL="http://faq.cprogramming.com/cgi-bin/smartfaq.cgi?answer=1052863818&id=1043284351"]NEVER [/URL][URL="http://answers.yahoo.com/question/index?qid=20071013052534AAuxWmW"]USE [/URL][URL="http://www.gidnetwork.com/b-57.html"]"FFLUSH()"[/URL] [URL="http://www.linuxforums.org/forum/linux-programming-scripting/41287-problem-fflush-stdin-function.html"]ON [/URL][URL="http://www.it.usyd.edu.au/~dasymond/mirror/c-faq/stdio/gets_flush2.html"]INPUT [/URL][URL="http://www.cplusplus.com/forum/general/6554/"]STREAMS [/URL][URL="http://c-faq.com/stdio/stdinflush.html"]SUCH [/URL][URL="http://gcc.gnu.org/ml/gcc-help/2009-01/msg00287.html"]AS [/URL][URL="http://www.dreamincode.net/forums/showtopic45833.htm"]"STDIN" [/URL] here is one method of properly … |
 | If you have any ideas for a code snippet you'd like to see, please post them here. We can't depend on the snippet writers to come up with all of the ideas, can we? ;) |
| | I have joined the thousands who have done it before, and have compared a number of sorting routines. The sorting is done on the same random-integer arrays. No surprises, quicksort wins this simple comparison hands down. There are clever combinations of sorting routines that are faster, like the snippet by … |
| | Please I need a complete Dev c compiler with most intersting hearders like the graphics hearder. Or complete method to add them, cause i have added lately and had no good results. I have stormed the net but cant find one. |
| | Hello, I'm writing the simple code as below #include <stdio.h> #include <stdlib.h> int main() { FILE *fp; float x,y; int n; int errno = 0; int i; fp=fopen("test_numbers.dat","w"); for(i=1;i<=10;i++) fprintf(fp,"%d %d\n",i,i*i); fclose(fp); fp=fopen("./test_numbers.dat","r"); if(fp==NULL); printf("File cannot be opened\n"); fclose(fp); return 0; } and save it as main.c I'm compiling the … |
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