Advertisements can anyone help? why ‘&’ is not required while calling a function in this program? but is thought that ‘&’ is required in call by reference. #include <stdio.h> #include <stdlib.h> struct node{ int data; struct node *next; }; void traversal(struct node *ptr) { while(ptr!=NULL) { printf("%d\n", ptr->data); ptr = ptr->next; } } int main()… Read More passing structure to function in c language
Advertisements I have this code: #include <stdio.h> void replaceIndexElement (int index, int element); int main () { replaceIndexElement(2, 3); return 0; } void replaceIndexElement (int index, int element) { int mainArr[10] = {0, 2, 1000, 6, 9, 11, 43, 8, 123, 87}; mainArr[index] = element; for (int i = 0; i < 10; i++) {… Read More How can I pass array to function argument?
Advertisements There is a function like this. I took this error expected identifier or ‘(‘ before ‘void’ How to solve this problem? Thank you. struct node * void ekleSirali(struct node * r,int x){ if(r==NULL){ r=(struct node *)malloc(sizeof(struct node)); r->next=NULL; r->x =x; return r; } I don’t know whether I should write struct. >Solution : The… Read More struct node * void expected identifier or '(' before 'void'
Advertisements I am a beginner studying C++. Currently I am studying functions, C strings, and pass by reference. The program below is meant to take a string from input, replace any spaces with hyphens, and any exclamation marks with question marks. If the function below, StrSpaceToHyphen() is of return type void, wouldn’t the function parameter… Read More C++ string modification, no pass by reference?
Advertisements With my programm I try to change the order of numbers in the int array. To the first function, I just passed both arrays and printed the array called arraytemp with the changed order. After that I printed in the main function the same array, just to see if the array was filled too.… Read More How to pass pointer of arrays to functions
Advertisements In C when a function is declared like void main(); trying to input an argument to it(as the first and the only argument) doesn’t cause a compilation error and in order to prevent it, function can be declared like void main(void);. By the way, I think this also applies to Objective C and not… Read More Why does a function in C(or Objective C) with no listed arguments allow inputting one argument?
Advertisements I’m making a program to add items to a LIFO (last in first out) array, where the elements are inserted at the start of the array. Here is my code: typedef struct neud{ int num; struct neud *next; }neud; void add(neud** head,int val){ //creat a new neod neud* newNeod; newNeod = malloc(sizeof(neud)); //assigning newNeod->num… Read More I'm having a problem understanding double pointers
Advertisements I’m making a program to add items to a LIFO (last in first out) array, where the elements are inserted at the start of the array. Here is my code: typedef struct neud{ int num; struct neud *next; }neud; void add(neud** head,int val){ //creat a new neod neud* newNeod; newNeod = malloc(sizeof(neud)); //assigning newNeod->num… Read More I'm having a problem understanding double pointers
Advertisements 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 modify an existing one? take the following code as an example: char *removeTags(char *s, int length) { if (!s… Read More modify existing char* or create a tmp char*?
Advertisements I’m trying to invert the case manually, and I tried this: char* invertirCase(char* str){ int size = 0; char* iterador = str; char* retorno = str; while (*iterador != ‘\0’) { if (retorno[size] < 96) { retorno[size] = *iterador + 32; } else { retorno[size] = *iterador – 32; } iterador++; size++; } return… Read More Why do I get "forbids converting a string constant to ‘char*’" in C++?