从键盘输入一个3×4的二维数组,将该数组的行、列元素互换,存放到另一个...答:include<stdio.h> int main(){int i,j,a[3][4]={1,2,3,4,5,6,7,8,9,10,11,12},b[4][3];printf("A数组:\n");for(i=0;i<3;i++){ for(j=0;j<4;j++){ b[j][i]=a[i][j]; //转置 printf("%3d",a[i][j]);} printf("\n");} printf("\nB数组:...