object-c计算数组中三个元素的和

Question

已知有一个数组元素分别为@12，@13，@14.25，计算数组中三个元素的和

Answer 1

#import <Foundation/Foundation.h>
int main(int argc, const char * argv[]) {
    double arr[] = {12,13,14.5};
    int i;
    double sum = 0;
    for (i = 0; i < 3; i++) {
        sum += arr[i];
    }
 
    @autoreleasepool {
         NSLog(@"%lf\n",sum);
    }
     return 0;
}

Answer 2

定义个变量 count = 0,遍历数组 count + item ,最后输出count