Question

C语言数组求和怎么求？

Answer 1

先获取数组长度，然后用for循环，从数组中获取值进行累加求和。

Answer 2

#include
#include
int main()
{
int n;
int val;
int * a;
int sun = 0, i;
printf("请输入数组的长度:");
scanf("%d", &n);
printf("\n");
a = (int *)malloc(n * sizeof(int));//为数组a动态分配内存
for(i = 0; i < n; i++)
{
printf("请输入数组的第%d个元素的值:", i+1);
scanf("%d", &val);
printf("\n");
a[i] = val;
}
for (i = 0; i < n; i++)
{
sun+=a[i];//sun+=a[i]相当于sun=sun+a[i];
}
printf("sun = %d\n",sun);
free(a);//释放a动态分配的内存
return 0;
}