In C programming, you can pass an entire array to functions. Passing array elements to a function is similar to passing variables to a function.

Example 1: Pass Individual Array Elements

#include <stdio.h>void display(int age1, int age2) {  printf("%d\n", age1);  printf("%d\n", age2);}int main() {  int ageArray[] = {2, 8, 4, 12};  // pass second and third elements to display()  display(ageArray[1], ageArray[2]);   return 0;}

Here, we have passed array parameters to the display() function in the same way we pass variables to a function.
We can see this in the function definition, where the function parameters are individual variables

Example 2: Pass Arrays to Functions

// Program to calculate the sum of array elements by passing to a function #include <stdio.h>float calculateSum(float num[]);int main() {  float result, num[] = {23.4, 55, 22.6, 3, 40.5, 18};  // num array is passed to calculateSum()  result = calculateSum(num);   printf("Result = %.2f", result);  return 0;}float calculateSum(float num[]) {  float sum = 0.0;  for (int i = 0; i < 6; ++i) {    sum += num[i];  }  return sum;}

Output

Result = 162.50

To pass an entire array to a function, only the name of the array is passed as an argument.

result = calculateSum(num);

However, notice the use of [] in the function definition.

float calculateSum(float num[]) {... ..}

This informs the compiler that you are passing a one-dimensional array to the function.

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Pass Multidimensional Arrays to a Function

To pass multidimensional arrays to a function, only the name of the array is passed to the function (similar to one-dimensional arrays).