数组_习题：编写一个4*4矩阵元素对角线之和的程序

# include <stdio.h> 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, sum1, sum2;//定义sum1,sum2,分别存放两条对线元素的和； sum1=sum2=0; for(i=0; i<4; i++) { for(j=0; j<4; j++) print

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