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- #include <stdio.h>
- int main()
- {
- int m[3][3], i, j, soma = 0;
- for (i = 0; i <= 2; i++){
- for (j = 0; j <= 2; j++){
- printf("Digite o valor [%d][%d] da matriz 3 x 3: ", i + 1, j + 1);
- scanf("%d",&m[i][j]);
- if (i == j)
- soma += m[i][j];
- }
- }
- printf("A soma dos elementos da diagonal principal e' %d.", soma);
- return 0;
- }
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