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How arrays are passed to functions in C/C++
In this tutorial, we will be discussing a program to understand how arrays are passed to functions.
In the case of C/C++, the arrays are passed to a function in the form of a pointer which provides the address to the very first element of the array.
Example
#include <stdio.h>
//passing array as a pointer
void fun(int arr[]){
unsigned int n = sizeof(arr)/sizeof(arr[0]);
printf("\nArray size inside fun() is %d", n);
}
int main(){
int arr[] = {1, 2, 3, 4, 5, 6, 7, 8};
unsigned int n = sizeof(arr)/sizeof(arr[0]);
printf("Array size inside main() is %d", n);
fun(arr);
return 0;
}Output
Array size inside main() is 8 Array size inside fun() is 2
Updated on: 17-Feb-2020
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