Recent questions tagged C

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c - Why scanf is behaving weird for char input?

/* Write macro for the following : 1. Arithmetic Mean of two no. 2. Absolute value of a no. 3. To convert a ... 6 The bigger of two numbers is 6 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 make a random generation number between 1 to 9 without repitition

i search about this issue in site and one of them help me a little. i want to make a puzzle with random number ... !! can any one help me ?? 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 - loading external files flex bison - yyin?

I am writing a basic language in flex + bison for my own personal research / to run simple scripts for fun ... Any advice would be appreciated. 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 - Garbage value when passed float values to the function accepting integer parameters

#include<stdio.h> int main(){ int ret = 0; ret = func(1.0,2.0); printf(" ret : %d ",ret); ... inside the function gives the correct value 11 ? 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 - Receiving SIGINT and exception Handles in Linux

Let's say we have a program in C that uses the sleep() function The program executes and goes to sleep ... existance of SIGINT(has been cleared) 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 - Premaster secret and master key in OpenSSL

I have following values: client-random bytes server-random bytes pre-master secret I don't want to use features ... in RFCs? Thank You. 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 - Strange behaviour of rand() in Xcode

While using Apple Xcode, the C program I include below will always return a 5 for y but z will return a random ... printf(" "); return 0; } 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 write own isnumber() function?

I'm new to C and I'm thinking how to write this function myself. I take a parameter from command line, so ... enought parameters."); return 0; } 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 - advice on how to make my algorithm faster

here is my code in C for problem#3 from project-Euler, where I have to find the largest prime factor of ... anyone help? thanks a lot. 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 - STM32 USB VCP (Virtual Com Port)

I generated a code for "stm32f103c8t6" with CubeMX for USB VCP, when I add "CDC_Transmit_FS" command to send data, ... */ HAL_Delay(1000); } } 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 - call to request_mem_region() fails

The start address 0x4806E000 (UART4 base address) is already present in /proc/iomem with the name omap4-uart. ... "software reset completed "); 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 - Swapping nodes in a linked list

I am trying to swap two adjacent nodes in a linked list, and I think I understand the idea of how to do it ... are the first two in the list. 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 - Convert char with hex value to String

If I have a character like the following: wchar_t c = 'x0A' What's an easy way to convert it so that it ... value of c becomes a string value. 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 - Use of %d inside printf to print float value gives unexpected output

#include<iostream> #include<stdio.h.> using namespace std; int main() { float f=11.11; printf("%d",f); } ... . What could be the reason behind? 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 - Hayes AT Commands: Detect Remote Hangup?

How are you supposed to programatically detect when the remote modem on your call hangs up? I am writing a C ... "listen" for remote hang up? See Question&Answers more detail:os...

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

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773 views

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c - issue with assignment operator inside printf()

Here is the code int main() { int x=15; printf("%d %d %d %d",x=1,x<20,x*1,x>10); ... value inside printf() results in undefined behaviour? 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 - Scanf a char using %d

I have a specific example below, which works perfectly fine if integers are inputted (see output1), when I try ... background, if any. 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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847 views

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c - Wait for and/or kill process grandchildren produced by fork

I fork() into process X and Y, afterwards Y forks() again into itself and process Z multiple times. Now process Y ... an idea of how to do 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 - function to split a filepath into path and file

Lets say I have a function: void split_path_file(char** p, char** f, char *pf) { //malloc and set *p ... Whats the best way to accomplish 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 - How to dynamically allocate 2d array that's 16B aligned

I'd like to allocate 2D array (square matrix) using memalign with 16B instead of using just malloc. I have ... change code above with memalign. 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 - Is it possible to find out the variable name, the pointer pointing to?

Is it Possible to get the name of array the pointer pointing to? example: char name[20]; char *p = name ... there any way to make it possible? See Question&Answers more detail:os...

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

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936 views

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c - Howto compute the factorial of x

how to get the value of an integer x, indicated by x!, it is the product of the numbers 1 to x. Example: 5! ... ; } printf(" = %d", d); 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 happens to the data in memory deallocated by free()?

What happens to the data that is present in a memory location that has just been freed by a free() ? Is that ... '1' or some garbage value ? 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 - CUDA Matrix Multiplication write to wrong memory location

The idea of my simple program that I've been trying to write is to take input from the user to see how large of a ... ty + tx] = Csub; } 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 - Overloading free() so my program use mine instead of the system's

I need to recode the free() func for educational purpose and it must be named free() also. When i ... advance. EDIT : Linux operating system See Question&Answers more detail:os...

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

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772 views

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c - Implementing a cache modeling framework

I would like to model the behavior of caches in Intel architectures (LRU, inclusive, K-Way Associative, etc)., I' ... ? I could not find one. See Question&Answers more detail:os...

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

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757 views

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c - How to remove an element found in an array and shift the array elements to the left?

int search(int a[]) { int i,V,index; printf("Enter the element (V),That you want to find:>"); scanf("%d",&V ... is located in a[%d].",V,index ) See Question&Answers more detail:os...

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

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771 views

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c - Why doesn't valgrind spot the leak when program was compiled with gcc-5.2.0

Today I was coding something and after I was done, I made a check with valgrind and I got a surprise. If I ... printf() helps in this story. See Question&Answers more detail:os...

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

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