Recent questions tagged C

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c - What does opening a file actually do?

In all programming languages (that I use at least), you must open a file before you can read or write to it. ... would it need to do on Linux? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Which is faster: while(1) or while(2)?

This was an interview question asked by a senior manager. Which is faster? while(1) { // Some code } or while(2 ... not, why do people use it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Find the fault or error

Can you find what is wrong with the following code? int main(){ char *p="hai friends",*p1; p1=p; ... will print space followed by a string! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Why does strlen() return strange result when array doesn't contain null terminator?

I have two programs. Both initialize an array from a string literal. In one case the array size is exactly the number of ... of = 6 , length = 5 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - dynamic memory allocation and dynamic array

I need to write a program, that will ask a user to enter a number of how many ints they would like to enter ... .com/PZyvEQ4J what i have so far See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - x86 convert to lower case assembly

This program is to convert a char pointer into lower case. I'm using Visual Studio 2010. This is from another ... I needed this solution only. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Switch statement not doing what I expect

What is wrong with this code: switch (n) { case 0: strcpy(resultString, "Zero"); case 1: strcpy(resultString, " ... n. What am I doing wrong?? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - How can I generate different random numbers for each player?

Both players get the same random number! ?I want each player to get a different number since they are throwing dice. ... 6. How can I fix this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Why doesn't the compiler warns me about an obvious error?

So, I just studied the Arrays material and got a problem... I got this following code: int a[5]; int i; ... an idea why is it happening? Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Double pendulum solution using GSL

I am learning to use GSL to solve ODE. I wanted to solve double pendulum problem using GSL ODE functions. ... understand what causes my error. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - realloc() leaking memory

I have a function which adds a character to a string: void AddChToString(char **str,char ch){ int len=(*str)? ... : 0 bytes in 0 blocks Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - How to force openGL to draw a non-convex filled polygon

It seems to be the standart that polygon are drawn in a convex shape. See stackoverflow.com/questions/15556929/open- ... 2509+ GLSL Version 1.40 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Global variables and the .data section

Is a variable that is stored in the .data section by definition a global variable that has program scope? ... or if there are counterexamples. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c program doesn't work scanf char

#include <stdio.h> int main() { struct cerchio c1, c2; float distanza; char k; //input del centro del ... have declared the variable k char! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Passing two-dimension array as a parameter

I have encountered a problem with passing two dimensional arrays to other function as parameter. It was not working ... deeply about this case. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Printf printing garbage after read() call. The offset is always printed as 0

#include <stdio.h> #include <unistd.h> #include <fcntl.h> #include <sys/types.h> #include <stdint.h> int main ... and last line. Please help. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Program crashes when trying to read numbers with scanf

A message like this appears, when i run this code. Project.exe has stopped working Some of my other code works ... want to add two numbers. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - what is causing SIGSEV?

/* learning from all the post - please correct me if i am wrong.. now it makes sense- if i remember it right ... ; i++; } return EXIT_SUCCESS; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Random number function is misfiring

I have a very simple iPhone app that requires a random integer from 1-100. I have a button that calls the ... 't display a new random number. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Test for multiple conditions in same if test?

I tried googling and failed. Using C, I have an IF statement. I want to test a variable against two non- ... I'm trying to type less. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - How do I use a structure?

Ok firstly I'll explain my assignment. For this assignment I have to use dynamic memory allocation which I am having no ... , day, phone); } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - How to extract the string if we have have more than one delimiters?

If I have this code: int main () { char *sentence = "Wisteria#Tunnel"; char stringA[50]; char stringB[50]; ... stringC will be "Japan" Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Using time stamp counter and clock_gettime for cache miss

As a follow-up to this topic, in order to calculate the memory miss latency, I have wrote the following ... then? Any more accurate statement? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Sets of all disjoint pairs

Given a set {1,2,3,4,5...n} of n elements, we need to find all sets of disjoint pairs. For ... and possibly some implementation details as well. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Am I correct to assume one cannot forward-declare a library's opaque pointer type?

There are a lot of questions out there about forward declarations and opaque types, but most seem to be from the ... that.) Thanks in advance! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Changing the value of something in a function

This is a test case for something larger, which is why it is written the way is. How could I make this bit of ... } system("PAUSE"); } Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - passing array of structure as a function parameter

typedef struct What_if { char price [2]; } what_if ; what_if what_if_var[100]; int format_input_records(); int ... pointer to struct or union. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c - Assignment of function parameter has no effect outside the function

Why last line parameter maybe has no effect outside the function: void save_last_frame( uint8_t *saveframe, uint8_t * ... the function } Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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