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C programming language
void pointer as function argument in C programming
Here, we will learn how to pass a string (character pointer) in a function, where function argument is void pointer.
Consider the given example
#include <stdio.h>
//function prototype
void printString(void *ptr);
int main()
{
char *str="Hi, there!";
printString(str);
return 0;
}
//function definition
void printString(void *ptr)
{
printf("str: %s\n",ptr);
}
Output
str: Hi, there!
In this example the function parameter ptr is a void pointer and character pointer (string) str will be assigned in it and program will print the string through void pointer.
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