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Questions - function-declaration

NEWBIE: passing a pointer to a function

I'm trying to relearn C from dabbling with it about 5 year ago. Specifically, I'm trying to learn how to extract a number of operations from main and make them into a function, with the aim of moving ...
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Kevin Zembower

c

pointers

pass-by-reference

pass-by-value

function-declaration

Votes: 0

Answers: 3

Latest Answer

The problem is that the pointer fp is passed to the function getfile by value. getfile(fp); That is the function deals with a copy of the value of the passed pointer fp. So changing the copy in the f...
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Vlad from Moscow

modify existing char* or create a tmp char*?

Some languages, like Java, require you to create another string in order to solve certain kinds of problems. But when it comes to C, when should you create another string and when should you simply mo...
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Felipe 杨睿

c

pointers

char

c-strings

function-declaration

Votes: 0

Answers: 2

Latest Answer

If the function deals with strings then the second parameter is redundant and error-prone char *removeTags(char *s, int length) If you want to create a new string then the function must be declared l...
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Vlad from Moscow

Accessing elements in a 2D array in C

I am writing a program that passes a 2D char array into a function for printing. However, when I try to access elements in the 2D array for printing, I can't. This problem does not occur when I place ...
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ncc1701e

c

pointers

multidimensional-array

function-definition

function-declaration

Votes: 0

Answers: 1

Latest Answer

The function declaration is wrong. As the parameter has the type char * then the expressions array[i] yields a scalar object of the type char that is promoted to the type int due to the integer promot...
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Vlad from Moscow

How to return char 2D array double pointer in C

#include<stdio.h> #define MAX_LEN 20 char *swap_elements(char **arr, int i) { char temp[5]; *temp = *arr; *arr = *(arr+i); *(arr+i) = *temp; return arr; } void main() { ...
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Mayuresh Kulkarni

c

pointers

multidimensional-array

c-strings

function-declaration

Votes: 0

Answers: 2

Latest Answer

For starters according to the C Standard the function main without parameters shall be declared like int main( void ) In this function call arr = swap_elements(arr, i); the array designator arr is i...
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Vlad from Moscow

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