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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <time.h>
  4.  
  5. int main(int argc, char**argv) {
  6.     int matriz[5][5];
  7.     int i, j;
  8.     int soma = 0;
  9.  
  10.     srand( time( NULL ) );
  11.  
  12.     /* gerando a matriz */
  13.     printf( "Matriz:\n" );
  14.     for( i = 0; i < 5; i++ ) {
  15.         for( j = 0; j < 5; j++ ) {
  16. 			matriz[i][j] = 5 + rand() % 5;
  17.             printf( "%3d", matriz[i][j] );
  18.         }
  19.         printf( "\n" );
  20.     }
  21.  
  22.     /* fazendo a soma */
  23. 	for( i = 0; i < 5; i++ ) {
  24. 		soma += matriz[i][i];
  25.     }
  26.     printf("Soma da diagonal principal: %d", soma);
  27.  
  28.     return 0;
  29. }
Success #stdin #stdout 0s 2160KB
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stdin
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Standard input is empty
stdout
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Matriz:
  5  7  9  7  7
  7  9  6  6  9
  7  9  7  7  6
  7  8  6  8  9
  7  5  7  8  8
Soma da diagonal principal: 37
https://ideone.com/1KLQkP
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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