[c] Forum Topics

In a function I placed the int array: factor[ g + 1] . g being input from the standard input but the program makes the array into this: factor[-1]. By the way I'm using xCode on mac. Why does this happen?

I have no idea why, but I'm having problems with getting my strings to compare properly. Below is my code. The part I'm having trouble with is in the while loop. For some reason the programs looping even when my string matches the constant. Any help would be appreciated. [CODE] …

Is it possible to put a function inside an[ICODE] if-else[/ICODE] statement? [CODE]if (condition) { // function here } else { // function here }[/CODE]

Hi, I realise this may be a simple problem but i've really been pulling my hair out at the moment. I've got a text file, which I need to read each of the 15 characters (numbers and letters) on each line in to a new record in an array (called …

okay, so I wrote a program in Perl to find prime numbers and, when learning C, I decided to translate it into C. The thing is that...well...it doesn't work. No matter what I do, I get the same message when I say ./primes.c at the terminal: Segmentation fault. I know …

Hi I have encountered a problem using vectors. I have a vector<char*> in a for loop, adding a char* to it after each iteration, but when I exit the loop and run through the contents of the vector, it has 4 copies of the final char* added. Here is the …

Please can somebody help me with Question Papers and answer Papers on [B]C, C++. [/B] I have a Interview tomorrow. Thanks and Best Regards, RAMYA

i need a c program for page allocation algorithm in operation system. its a simulation of what happens in the cpu.

Hi could someone please help me with my code? I want to calculate an accumulate investment after a given amount of years, months, or days. I am reading in an annual interest from the user and would like to have this converted into monthly and daily interest based on the …

I have two code snippets basically I want a program to do color in the console but I only want it to run a certain function based on the compiler (I will use windows.h but my teacher will use conio.h because she uses Borland C++ 5.02 ) I have a …

My problem is: I want to call the method, but I don't know at compile-time which arguments I want to pass.Is there some way by which I can create the va_list during run time and pass it to the fucntion. Eg Code: total(4, 1,2,3,4) ;//Where 4 is the number of …

hi, in cormen's book while traversing bfs we are given a source node from which we start traversing. but for dfs we do the traversal for each node iteratively. why is this done so? i mean the difference between both traversals should be on the way it is done (the …

Hi, I want to find number of elements of each type in a double dimensional array For example A:{ 1 1 1 1 1 1 1 1 2 1 2 2 1 1 3 2 3 1 4 5 } So the result should be P1 =5 P2=0 p3 = …

Hello, I have a quick question about malloc. If I create a loop where I'm allocating memory to a pointer character array. To which each array gains the same amount of memory allocation. Do I have to free each one of those arrays with in the variable? Or is it …

Hello, can someone please help me with my code. I'm working on a program to calculate the monthly cost for excess minutes from two different cell phone companies. I still have a lot more to add to my code, but I am stuck on this particular part. I am reading …

Could someone please help me with this assignment? I am near finishing. It is just one minor problem that is preventing me from finalizing this. I added a comment /* Problem */ above the problem. I just can't seem to add up all the values for JOG_min. When I run …

I'm a little confused on how to even start this problem. Here's the problem: Given a square matrix, write a program that determines the number of white blocks and total number of squares in each of the white blocks. By definition the outside boundaries of the matrix must be shaded. …

Hi everyone! I am in Windows XP and this has been my problem whenever i use graphics mode in C. We are required to use the Borland Turbo C compiler IDE (with the blue background thing.) Here is the problem: Whenever I run the program in graphics mode, it always …

Hi guys I am trying to read 8 lines from a file an and pass each line of data to a separate SPE using dma transfers.. how can I do this any ideas?

write a c program that computes the grade of a student using the formula. grade=40%major exam+30% ave of two long exams + 30%ave of 3 short quizzes.. Display the average of two long exams,average of 3 short quizzes and the grade of the student. Display also a message whether the …

[CODE]#include <stdlib.h> #include <stdio.h> #include <conio.h> int main() { int tempnum = 0; int i; int mainnum ; int maincount = 0; int tempcount ; int *a; int n; FILE * file; file = fopen ("input.txt", "r"); if(file==NULL) { printf("Error: can't open file.\n"); return 1; } else { printf("File opened …

I have a weird Buffer Clearing Error in this code. This is the line that is causing the error. [CODE] if(a<=0) [/CODE] After you compile the code and run the code put in a group of letters like abc when the programs asks you to put in an integer. The …

Does anyone know where there is any good documentation for input functions in C programming? I've been searching google for quite awhile with no luck :(.

I seem to have trouble reading the input from the array [CODE]#include <stdio.h> #include <conio.h> #define ROW 1 #define COL 6 void printinfo(int[][COL],int,int); void findId(int[][COL],int,int); int sum=0; float avg=0; int main() { int info[ROW][COL]={0}; for(int x=0;x<ROW;x++) { printf("\nEnter the students ID number:"); fflush(stdin); scanf("%d",&info[x][0]); for (int y=0;y<COL;y++) { printf("\nEnter the …

I am getting some build code errors I do not understand how to fix. This is probably because I am so new to programming. Help is appreciated! Line 54 error is missing semicolon before type and lines 56,59, and 60 say i is undeclared??? [code] include<stdio.h> #include<string.h> //Global Variables char …

Can someone please help me? I am creating a program to calculate the cost of excess minutes with two cell phone companies. I am reading my data in from a file. This is the data from my file. [CODE] 2 32 3 45 1 36 3 15 1 30 1 …

Hi! I am trying to figure a way to measure a process' system time. The Unix's time command seems in effective because it only displays the result in seconds but my program is small so second is inappropriate. I also tried to use gprof. However gprof uses atexit() to trace …

write a c program that finds the smallest number among the five integers inputted by the user with the given sample output: Enter first number:20 Enter second number:3 Enter third number:18 Enter fourth number:100 Enter fifth number:7 The smallest number is 3...

I am creating a C program to work with environment variables and I am having some problems. I have three choices to input from the command line: a.exe, a.exe <environment_variable_name>, or a.exe -a. The 'a.exe -a' should display a list containing all environment variable names and assigned values, with one …

I'm sorry, my function won't compile, and I cannot figure out why, but I know it's something ridiculously easy. int search_for(keywords[TOTAL_KEYWORDS][20], string_of_interest[MAX_CHARS_PER_LINE]); it tells me there is a syntax error before the '[' token. Thanks

help:D

I am trying to input a text file with twenty unsorted names in it into an array and then perform a bubblesort and output to a new file. The filename for the txt file is names.txt Here is what I have so far....not much...I would appreciate some help the right …

I will start a new project. But I have some simple questions about it : 1) Is the C faster than Java on processes which has no graphic user interfaces (like softwares which are working just from command line) ? 2)Because if the C is faster than Java, I want …

I don't believe there is a Forum dedicated to Cryptography so I will post in the C forum since the program I've used to decode a base 64 encoded file was written in C. I have been given a base64 encoded file and I have managed to remove the base64 …

please help.. a small airline wants you to create an automated reservation system.the system has to assign seats on each flight of the airline's only plane(capacity:10 seats).your program should display the ff. alternative choices: PLEASE TYPE 1 FOR "FIRST CLASS" \n PLEASE TYPE 2 FOR "ECONOMY".\n\n\n if the person types …

How would I make all letters be an invalid input? I want all letters, numbers greater than 20, and numbers less than or equal to 0 to be invalid inputs. I used an or cause I want any case to be an invalid input. Any help would be greatly appreciated. …

Hello People, I cannot understand how this expression gets evaluated .. 1+~0 From what I know ~ has higher priority . So the expression becomes 1+(~0)= 2 But the answer that I got was 0. I know it is some thing to do with the fact that ~ is right …

Basically I am totally confused on how to pass a char, which is given by the user, and then store it and pass it to another function by reference.

The following code gets segmentation fault: [CODE] void dfs_visit(graph g, int u) { // printf("u: %d\n",u); /* g.vertices[u].color = GRAY; g.vertices[u].d = time++; printf("before visit for loop\n"); for (int i = 0;i < g.number_vertices;i++) { if (i != u) { if (g.vertices[i].color == WHITE) { g.vertices[i].p = u; // dfs_visit(g, …

[CODE] int main() { char c1, c2; printf("Enter a character: "); scanf("%c", &c1); printf("Enter another character: "); scanf("%c", &c2); system("pause"); return; } [/CODE] Thats what my code looks like, the problem is the code skips the part where it lets you input c2. I dont understand why its doing this. …

Hi, I need one of my assignments to be done in C or C+. Need someone who can do the assignment for it. Need it urgently..need the assignment done by sunday. Will pay money for doing the assignment. Please email me immediately <<Email Snipped>> thanks Raj

Hello. Can someone please tell me what happens when you cast a large number to a char? For example: [CODE=C] char string[8]; int num = 2040; string[0] = (char) num; [/CODE] I'm working my way through a larger program to figure out what it does, but I'm not sure how …

I wrote a program for counting and printing characters in a data link layer frames i've succeeded in getting output for the first frame but for the other frames it showed not valid please help in the code If i give an input as 6sudhi4div then the integer in the …

Hello, This might not appear like a programming question, but inherently deals with code. I have a following piece of test-code, which has obvious errors like array index out of bounds, memory leak:- [CODE] #include "stdio.h" #include "stdlib.h" main() { int i; char *ptr; ptr = (char*)malloc(5); for(i=0;i<10;i++) { ptr[i]=(char)i; …

Hello, Can we download files from WWW using a C code? I could find codes in C#, php, and Java and I wonder if it can be done in C. Thanks.

here i have two bubble sort versions. [CODE] void bsort() { int i,j,jc=0,ic=0,temp,swap=1; //for(i=0;i<NOE & swap;i++){ this one or for(i=0;i<NOE-1 & swap;i++){ \\ this swap=0,ic++; for(j=0;j<NOE-1-i;j++){ jc++; if(a[j]>a[j+1]){ temp = a[j]; a[j] = a[j+1]; a[j+1] = temp; swap = 1; } } } printf("jc=%d ic=%d\n",jc,ic); } [/CODE] i checked it …

i programming in c language and i need to using parallel port the compiler that i using : "microsoft visual C++" int the old compiler i using this command : inport(0x378) but now in vc that not work please help me...

I'm new to structures, our instructor haven't discussed it yet... Im trying to make a program that will ask the user 5 "fruits". Ex. The user input: Mango Apple Mango Grapes Grapes Output: Fruits entered: 2 Mango 1 Apple 2 Grapes I've trying to see some tutorials but i can't …

Let's say we want to free the total memory used by a linked list in a program, I generally do it like this [CODE]typedef struct linked_list { int some_data; struct linked_list *link; }NODE; int free_memory(NODE * head) { NODE * temp = NULL; if(head == NULL) return 0; // FAILURE …

Hello People... I found this sample code online [code=c ] int main(int argc, char* argv[]) { struct bitfield { signed int a:3; unsigned int b:13; unsigned int c:1; }; struct bitfield bit1={2,14,1}; printf("%d",sizeof(bit1)); return 1; } [/code] I compiled this code on linux with gcc compiler and the output I …