#include<stdio.h> main( ) { int a[4][4]={1,2,3,4,5,6,7,8,9,10...答:main( ){ int a[4][4]={1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16};int i,j,sum=__0___ ;for(i=0; i<4; i++){ for(j=0; j<4; j++){ printf("%3d",_a[i][j] );} printf("\n");} for(i=0; i<4; i++)sum+=_5*i+1__;printf("sum=%...