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Who_robbed_Thibouvre/fundamentals/basic_read/basic_read.c

@@ -0,0 +1,99 @@
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <strings.h>
+int open_close(const char *filename){
+
+    FILE *file = fopen(filename, "r");
+    if(!file){
+        //fclose(file) ;
+        return 0;
+    }
+    fclose(file);
+    return 1;
+}
+
+int read_n_bytes(const char *filename, size_t n){
+    
+    FILE *file = fopen(filename, "r");
+    if (!file) return 1;
+    
+    char *cara = malloc((n + 1) * sizeof(char));
+    if(!cara){
+        fclose(file);
+        return 1;
+    }
+    
+    fread(cara, sizeof(char), n, file);
+    //cara[n+1] = '\0';
+    //printf("%s\n", cara);
+    free(cara);
+    fclose(file);
+    return 0;
+}
+
+int read_bytes(const char *filename){
+
+    FILE *file = fopen(filename, "r");
+    if(!file) return 1;
+
+    //fclose(file);
+    int c = fgetc(file);
+    int index = 0;
+    while(c != EOF){
+        index ++;
+        c = fgetc(file);
+    }
+/*
+    char *cara = malloc((index + 1) * sizeof(char));
+    if(!cara) {
+        fclose(file);
+        return 1;
+    }*/
+/*
+    fread(cara, sizeof(char), index, file);
+    cara[index + 1] = '\0';
+    printf("%s\n", cara);
+    free(cara);
+    fclose(file);
+*/
+    fclose(file);
+    int status = read_n_bytes(filename, index);
+    if(status == 0) return 0;
+    return 1;
+}
+
+/*
+$ cat does_exist.txt
+Hey, as you can see, this file is not empty and therefore you can open it, read it, and close it!
+*/
+
+int main()
+{
+    int a = read_n_bytes("does_exist.txt", 32);
+    printf(" | %d\n", a);
+    /* Expected:
+    Hey, as you can see, this file i
+     | 0
+    */
+
+    int b = read_n_bytes("does_not_exist.txt", 5);
+    printf(" | %d\n", b);
+    /* Expected:
+     | 1
+    */
+    a = read_bytes("does_exist.txt");
+    printf("--> Return code: %d\n", a);
+    /* Expected:
+    Hey, as you can see, this file is not empty and therefore you can open it, read it, and close it!
+    --> Return code: 0
+    */
+
+    b = read_bytes("does_not_exist.txt");
+    printf("--> Return code: %d\n", b);
+    /* Expected: 
+    --> Return code: 1
+    */
+    return 0;
+}
+

Who_robbed_Thibouvre/fundamentals/basic_write/basic_write.c

@@ -0,0 +1,31 @@
+
+
+
+#include <stdio.h>
+int write_one_by_one(char *filename, const char *text){
+
+    FILE *file = fopen(filename, "rw");
+    if(!file) return 1;
+
+
+
+    return 0;
+}
+
+int main()
+{
+    // does_exist.txt contains: "something which will be replaced"
+    int a = write_one_by_one("does_exist.txt", "Hello World!");
+    // does_exist.txt contains: "Hello World!"
+
+    // does_not_exist.txt... does not exist.
+    int b = write_one_by_one("does_not_exist.txt", "Now I exist");
+    // does_not_exist.txt... now exists and contains: "Now I exist"
+
+    printf("%d %d\n", a, b); // 0 0
+    // The opening should succeed as it creates the file if needed
+    // However it can fail if the file's access is forbidden
+
+    return 0;
+}
+