1、完善以下程序达到要求的功能: 先从键盘上输入一个3行3列整型数组的各个元素的值,然后输出主对角线和次对角线元素之和。 #include <stdio.h> int main() { int a[3][3], sum = 0, sum1 = 0; int i, j; printf("Enter data:\n"); for (i = 0; i<3; i++) for (j="0;" j++) scanf("%d", &a[i][j]); (i="0;" { sum="sum" + a[i][i]; sum1="sum1" a[i][()]; } printf("\nsum="%5d,sum1=%5d\n"," sum, sum1); return 0;>
A.2-i
B.2-1
C.i
D.1-i