#include <stdio.h>
#include <stdlib.h>

main(){

       int matriz[4][4], i, x, linha2=0, coluna1=0, diagonal1=0, diagonal2=0, total=0, c=3;

       for(i=0; i<4; i++){

                for(x=0; x<4; x++){

                         printf("Linha %d e Coluna %d: ", i, x);
                         scanf("%d", &matriz[i][x]);

                }

       }

       for(i=0; i<4; i++){

                for(x=0; x<4; x++){
                         if(i==2){
                                linha2 = linha2 + matriz[i][x];
                         }
                         if(x==1){
                                coluna1 = coluna1 + matriz[i][x];
                         }

                         total = total + matriz[i][x];
                }

                diagonal2 = diagonal2 + matriz[i][c];
                c--;
                diagonal1 = diagonal1 + matriz[i][i];

       }

       printf("Linha 2: %d\n", linha2);
       printf("Coluna 1: %d\n", coluna1);
       printf("Diagona principal: %d\n", diagonal1);
       printf("Diagona secundaria: %d\n", diagonal2);
       printf("Total 1: %d\n", total);

       system("pause");
}