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DS/C/Lab/Week12/GraphAdjMat.c

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+#include <stdio.h>
+#define MAX_VERTICES 100
+
+int adjMatrix[MAX_VERTICES][MAX_VERTICES];
+
+void initializeGraph(int v) 
+{
+    int i, j;
+    for (i = 0; i < v; i++) 
+    {
+        for (j = 0; j < v; j++) 
+            adjMatrix[i][j] = 0;
+    }
+}
+
+void addEdge(int start, int end, int isDir) 
+{
+    adjMatrix[start][end] = 1;
+    if (!isDir)
+        adjMatrix[end][start] = 1;
+}
+
+void display(int v) 
+{
+    int i, j;
+    printf("Adjacency Matrix:\n");
+    for (i = 0; i < v; i++) 
+    {
+        for (j = 0; j < v; j++)
+            printf("%d ", adjMatrix[i][j]);
+        printf("\n");
+    }
+}
+
+int main() 
+{
+    int v, e, i, start, end, isDir;
+    printf("Enter the number of vertices: ");
+    scanf("%d", &v);
+    initializeGraph(v);
+    printf("Is the graph directed? (1 for yes, 0 for no): ");
+    scanf("%d", &isDir);
+    printf("Enter the number of edges: ");
+    scanf("%d", &e);
+    printf("Enter the edges (start and end vertex) separated by space:\n");
+    for (i = 0; i < e; i++) 
+    {
+        scanf("%d %d", &start, &end);
+        addEdge(start, end, isDir);
+    }
+    display(v);
+    return 0;
+}