根据数组int a[4][4]={{1,2,3,4},{5,6,7,8},{9,10,11,12}{13,14,15,1

int main(void){int a[4][4]={{1,2,3,4},{5,6,7,8},{9,10,11,12},{13,14,15,16}};int i,j;int sum;for (i = 0; i < 4; i++){sum = 0;for (j = 0; j < 4; j++){sum += a[i][j];}printf("第%d行平均值:%f\n",i+1,sum / 4.0);}system("pause");
return (0);}运行结果如下：
您的程序.
{int a[4][4]={{1,2,3,4},{5,6,7,8},{9,10,11,12},
{13,14,15,16}};//这里少了一个逗号,在12的括号后面.
float sum;aver; // 这里是用逗号隔开的.float sum,aver;