c
Question: I need to convert an unsigned int into a vector of unsigned char to later translate these addresses into binary, for a job that I need to simulate a virtual memory. Can someone explain to me how to do this? Answer: If I understand correctly, you want to reinterpret …
Convert "unsigned int" to vector of "unsigned char"? Read More »
Question: char* – pointer to a variable of type char. char* const – a constant pointer. const char* – pointer to a constant variable. const char* const – a constant pointer to a constant. char const* is the same as const char* . It is automatically converted to it. But …
What is the meaning of the char * const * type in C language? Read More »
Question: #include <stdio.h> #include <stdlib.h> #include <string.h> struct Ecoponto{ int codigo; int contentores[3]; char cidade[20]; char *rua; int nporta; }; int main(int argc, char** argv) { struct Ecoponto ecoponto; printf(“\nIntroduza o nome da rua:”); scanf(“%s”,ecoponto.rua); printf(“%s”,&ecoponto.rua); return (EXIT_SUCCESS); } I would like to know the best way to store "the …
How do I store a string of undefined length in a structure? Read More »
Question: When executing code #include <stdio.h> #include <string.h> int main() { char *first = “first”; char *second = “second”; char *third = strcat(first, second); } a segmentation error occurs. Answer: If the contents of the lines are known at the compilation stage, then gluing can be organized at the compilation …
Question: I'm creating a 'game' in which the user is required to choose a range, and in this range, he chooses how many random numbers he wants to generate. However, in the generated random numbers, there can be no repetitions, for example: Range 1 to 10, show 10 random numbers …
c – How do I generate random numbers and without repeating them in a time interval? Read More »
Question: I am aware that an ANSI standard C program can be compiled on both Windows and Linux. But when it comes to using sockets ? Isn't this part of the ANSI C standard? Because when I use sockets on Windows, I have to use a library called "Winsock.h" , …
Question: python has pip to install third party libraries. Is there a similar one for C? And if not , why not? Answer: C is a language for writing programs, and the language specification does not include package management. You can only check if the package is connected or not …
Question: I have this structure: typedef struct Nodo { int valor; int numSubNodos; struct Nodo *padre; struct Nodo **hijo; } Nodo; To fill it as an unbalanced non-binary tree, or better said, that a node can have several children and not all nodes have the same number of children. The …
Free memory of dynamic array of pointers in non-binary tree Read More »
Question: Question: I'm sorry if there is a shortage etc. for the first time posting here. Can you tell me the reason for the error? #include “pch.h” #include <iostream> #include <string.h> #include <stdio.h> int main(void) { char str[10]; **strcpy (str, “MARIO”);** printf(“%s\n”, str); return 0; } thank you for your …
Question: How does the *++argv[0] construct work in the inner loop in this example of using pointers? #include <string.h> #include <stdio.h> int main(int argc, char *argv[]) { int c, except = 0, number = 0; while(–argc > 0 && (*++argv)[0] == ‘-‘) { printf(“argv = %s\n”, *argv); while(c = *++argv[0]) …
