Code:#include <stdio.h>#include <stdlib.h> int arraysum(int array_sum[][],int size1,int size2){ int i,j,sum=0; for(i=0;i<size1;i++){ for(j=0;j<size2;j++){ sum =sum+array_sum[i][j]; } } return sum; } int main() { int array [4][4]= {{1,2,3,4},{5,6,7,8},{9,10,11,12},{13,14,15,16}}; int a,b,mysum; for(a=0;a<4;a++){ for(b=0;b<4;b++){ printf("Your number is[%d][%d]=[%d]\n",a,b,array[a][b]);} } mysum =arraysum(array,4,4); printf("My Sum is = %d", mysum);