ex done

Makefile

+CC = gcc
+CFLAGS = -Wall -Wextra -fsanitize=address -fsanitize=leak
+
+FOLDER = .
+SOURCES = $(wildcard $(FOLDER)/*.c)
+OBJECTS = $(SOURCES:.c=.o)
+
+TARGET = all
+
+$(TARGET) : $(OBJECTS)
+	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
+
+.PHONY: clean
+
+clean:
+	rm -f $(TARGET) $(OBJECTS)
+
+rebuild: clean all

ex1.c

+#include <stdio.h>
+#include <stdlib.h>
+
+#define N 5
+#define inf 100
+
+void print_matrice(int** w, int n) {
+    for(int i = 0; i < n; i++) {
+        for(int j = 0; j < n; j++) {
+            if(w[i][j] == inf) {
+                printf(" inf");
+            } else {
+                printf("%4d", w[i][j]);
+            }
+        }
+        printf("\n");
+    }
+    printf("\n");
+}
+
+int** floyd_warshall(int** w, int n) {
+    for(int k = 0; k < n; k++) {
+        for(int i = 0; i < n; i++) {
+            for(int j = 0; j < n; j++) {
+                if(w[i][j] > w[i][k] + w[k][j]) {
+                    w[i][j] = w[i][k] + w[k][j];
+                }
+            }
+        }
+        print_matrice(w, n);
+    }
+    return w;
+}
+
+int** init_matrice(int n) {
+    int** w = malloc(n * sizeof(int*));
+    for(int i = 0; i < n; i++) {
+        w[i] = malloc(n * sizeof(int));
+    }
+    return w;
+}
+
+void free_matrice(int** w, int n) {
+    for(int i = 0; i < n; i++) {
+        free(w[i]);
+    }
+    free(w);
+}
+
+int main() {
+
+    int data[N][N] = {
+        {0, 3, 8, inf, -4},
+        {inf, 0, inf, 1, 7},
+        {inf, 4, 0, inf, inf},
+        {2, inf, -5, 0, inf},
+        {inf, inf, inf, 6, 0}
+    };
+
+    // int data[N][N] = {
+    //     {0, 2, 4, inf, 3},
+    //     {2, 0, 8, inf, 1},
+    //     {6, 2, 0, 4, 3},
+    //     {1, inf, inf, 0, 5},
+    //     {inf, inf, inf, 1, 0}
+    // };
+
+    int** mat = init_matrice(N);
+
+    for(int i = 0; i < N; i++) {
+        for(int j = 0; j < N; j++) {
+            mat[i][j] = data[i][j];
+        }
+    }
+    print_matrice(mat, N);
+    floyd_warshall(mat, N);
+    free_matrice(mat, N);
+
+    return 0;
+}
\ No newline at end of file