C Basics - Passing Array as Function Argument in C

Arrays can be used in function parameters. An array can be passed as argument to a function whose formal parameters are defined as below.

void func(int *param) {
   statement(s);
}
void func(int param[10]) {
   statement(s);
}
void func(int param[]) {
   statement(s);
}

Example:

#include <stdio.h>

int sum(int arr[], int size) {

   int i;
   int sum = 0;

   for (i = 0; i < size; ++i) {
      sum += arr[i];
   }   

   return sum;
}
int main () {

   int balance[5] = {1000, 2, 3, 17, 50};
   int total;

   /* pass pointer to the array as an argument */
   total = sum( balance, 5 ) ;
 
   /* output the returned value */
   printf( "Sum value is: %d ", total );
    
   return 0;
}

Output of above program,

Sum value is: 1072

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Related topics:
Arrays in C   |   Two Dimensional Array in C   |   Strings in C   |   Pointers in C   |   Returning Array from a Function in C

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List of topics: C Programming

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