给定整数数组，找到其元素的总和。
例子 ：
Input : arr[] = {1, 2, 3}
Output : 6
1 + 2 + 3 = 6
Input : arr[] = {15, 12, 13, 10}
Output : 50
C/C++
/* CPP Program to find sum of elements
in a given array */
#include
// function to return sum of elements
// in an array of size n
int sum(int arr[], int n)
{
int sum = 0; // initialize sum
// Iterate through all elements
// and add them to sum
for (int i = 0; i < n; i++)
sum += arr[i];
return sum;
}
int main()
{
int arr[] = {12, 3, 4, 15};
int n = sizeof(arr) / sizeof(arr[0]);
printf("Sum of given array is %d", sum(arr, n));
return 0;
}
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