89 questions
I would like to sort the random strings of the alphabet you entered in ascending order of ASCII code and print them out.exampleOriginal string: bfGageGaheifhalenbcuafuhneixlDbfuhflfi0After sorting: DG...
Please help me.When I try to access the vector of the structure (elmCom) that I define, the program suddenly ends.The vector (named elcom and very confusing) is defined in the header file, then the co...
This is a rudimentary question.I learned that C/C++ saves memory and speeds by securing and delivering non-simple models (such as int and double) with a pointer.Should all self-made classes and struct...
Regarding the pointer, I have a question due to lack of studyI don't know if it's the correct syntax because I don't have an environment where I can use my smartphone right now. void f(int*a) {*a=5;}i...
I know that using references makes it easier to read and write code,What exactly is the difference between the two?
Why is the pointer so hard?It's hard to use a normal pointer. A function pointer?How do I turn over the factor?Please tell me how to use it, not too difficult ㅜ
It's a code that my friend sent me, saying she found a weird function1[a] It compiles well and executes well.What's going on here?int main(){ int* a = (int*)malloc(sizeof(int)*2); a[0] = 1; a[1] = 2; ...
It's possible to point at each type of pointerWho tells me how many pointers to write in an array should be released when memory is released?When you hand over an array to a function, you hand over th...
#include <stdio.h>#include <string.h># # define MAX 50typedef struct contact_st{ char Name[10]; char PhoneNumber[13];} } Contact;Contact PhoneBook[MAX];int contactSwap(void* arr, int i, in...
I heard that if you receive a real data value from the scanf function, the data type of the factor value is automatically changed from float type to double type, so in that way, the int type data valu...
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