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  1. #include<stdlib.h>
  2. #include<stdio.h>
  3.  
  4. struct digraph //Estrutura do grafo, V e A são contadores, matrix_adj é um ponteiro para um array de ponteiros
  5. {
  6.     int V , A;
  7.     int **matrix_adj;
  8. };
  9.  
  10. typedef struct digraph* Digraph;
  11. int **matrix_alloc(int r,int c,int val);
  12. Digraph graph_alloc(int vertex);
  13. void insert(Digraph G, int v, int w);
  14. void show(Digraph G);
  15.  
  16. int main(void)
  17. {
  18.     Digraph G;
  19.     G = graph_alloc(6);
  20.     insert(G, 1,2);
  21.     insert(G, 1,3);
  22.     insert(G, 2,4);
  23.     insert(G, 3,4);
  24.     insert(G, 4,5);
  25.     insert(G, 5,6);
  26.     show(G);
  27.     return 0;
  28.  
  29. }
  30.  
  31. int **matrix_alloc(int r,int c,int val)
  32. {
  33.     int i, j;
  34.     int **matrix = (int**)malloc(r*sizeof(int*));// aloca linhas
  35.     for(i=0;i<r;i++)
  36.     {
  37.         matrix[i] = (int*)malloc(c*sizeof(int));//aloca colunas
  38.         for(j=0;j<c;j++)
  39.         {
  40.             matrix[i][j] = val;
  41.         }
  42.     }
  43.     return matrix;
  44. }
  45.  
  46. Digraph graph_alloc(int vertex)
  47. {
  48.     Digraph G = malloc(sizeof(struct digraph));
  49.     G->V = vertex;
  50.     G->A = 0;
  51.     G->matrix_adj = matrix_alloc(vertex, vertex, 0);
  52.     return G;
  53. }
  54.  
  55. void insert(Digraph G,int v, int w)
  56. {
  57.     if(G->matrix_adj[v][w] == 0)
  58.     {
  59.         G->matrix_adj[v][w] = 1;
  60.         G->matrix_adj[w][v] = 1;
  61.         G->A++;
  62.     }
  63. }
  64.  
  65. void show(Digraph G)
  66. {
  67.     int v, w;
  68.     for(v=0; v<G->V; v++)
  69.     {
  70.         for(w=0; w<G->V;w++)
  71.         {
  72.             printf("%d ", G->matrix_adj[v][w]);
  73.         }
  74.         printf("\n");
  75.     }
  76.     printf("\n");
  77.     printf("Vertices: ", G->V);
  78.     printf("Arestas:  ", G->A);
  79. }
  80.  
Success #stdin #stdout 0s 4480KB
comments (?)
stdin
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Standard input is empty
stdout
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0 0 0 0 0 0 
0 0 1 1 0 0 
0 1 0 0 1 0 
0 1 0 0 1 0 
0 0 1 1 0 1 
0 0 0 0 1 0 

Vertices: Arestas:
https://ideone.com/3dCrcx
language:
C (gcc 8.3)
created:
5 years ago
visibility:
public

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