Révisions

Révisions/CM/debordement.c

@@ -0,0 +1,20 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+unsigned long int factorielle(unsigned long int n) {
+    if (n > 1) {
+        return n * factorielle(n-1);
+    } else return 1UL;
+}
+
+int main(int argc, char *argv[]) {
+    unsigned long int l;
+    int n = 1;
+
+    printf("%d\n", sizeof(l));
+    while (factorielle(n+1) >= factorielle(n)) n++;
+    l = factorielle(n);
+
+    printf("valeur de n = %d, valeur de %d! = %lu\n", n, n, l);
+    return EXIT_SUCCESS;
+}

Révisions/CM/parenthesage.c

@@ -0,0 +1,34 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main(int argc, char* argv[]) {
+    if (argc < 2) {
+        puts("Veuillez préciser une expression arithmétique...");
+        return EXIT_FAILURE;
+    }
+
+    char* result = (char*)calloc(strlen(argv[1])+1, sizeof(char));
+    int length = 0, nb_ouvrante = 0, nb_fermante = 0;
+
+    for (int i = 0; i < strlen(argv[1]); i++) {
+        if (argv[1][i] == '(' || argv[1][i] == ')') {
+            result[length] = argv[1][i];
+            length++;
+
+            if (argv[1][i] == '(') nb_ouvrante++;
+            else nb_fermante++;
+        }
+    }
+
+    int equite = 0;
+    for (int i = 0; i < strlen(result); i++) {
+        if (result[i] == '(') equite++;
+        else equite--;
+
+        if (equite < 0) break;
+    }
+
+    printf("%s %s %s\n", result, nb_ouvrante == nb_fermante ? "OK" : "NOK", equite == 0 ? "valide" : "non valide");
+    return EXIT_SUCCESS;
+}

Révisions/CM/taille.c

@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+int main(int argc, char* argv[]) {
+    struct stat buffer;
+    if (argc < 2) {
+        puts("Veuillez préciser un fichier.");
+        return EXIT_FAILURE;
+    }
+
+    stat(argv[1], &buffer);
+    printf("La taille de %s est de %d octets.\n", argv[1], buffer.st_size);
+    return EXIT_SUCCESS;
+}