Added writing and reading structs from files

Author Mitja Felicijan <mitja.felicijan@gmail.com> 2024-06-22 20:01:14 +0200
Committer Mitja Felicijan <mitja.felicijan@gmail.com> 2024-06-22 20:01:14 +0200
Commit 134f855b537b714eb98bc1e6e1e4790b4d6491a3 (patch)
-rw-r--r-- c-structs/.clang-format 4
-rw-r--r-- c-structs/Makefile 13
-rw-r--r-- c-structs/character.dat bin 0 B -> 60 B
-rw-r--r-- c-structs/read.c 24
-rw-r--r-- c-structs/struct.h 6
-rw-r--r-- c-structs/write.c 25
6 files changed, 72 insertions, 0 deletions
diff --git a/c-structs/.clang-format b/c-structs/.clang-format 
  
 1 
BasedOnStyle: Chromium
 
  
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ColumnLimit: 120
 
  
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IndentWidth: 4
 
  
 4 
  
diff --git a/c-structs/Makefile b/c-structs/Makefile 
  
 1 
all: write read
 
  
 2 
  
 
  
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write:
 
  
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	gcc write.c -o write
 
  
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read:
 
  
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	gcc read.c -o read
 
  
 8 
  
 
  
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clean:
 
  
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	-rm write
 
  
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tags:
 
  
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	ctags -R *
diff --git a/c-structs/character.dat b/c-structs/character.dat
diff --git a/c-structs/read.c b/c-structs/read.c 
  
 1 
#include <stdio.h>
 
  
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#include "struct.h"
 
  
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int main(void) {
 
  
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    printf("Read struct\n");
 
  
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    Character ch;
 
  
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    FILE* file = fopen("character.dat", "rb");
 
  
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    if (file == NULL) {
 
  
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        perror("Error opening file");
 
  
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        return 1;
 
  
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    }
 
  
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    fread(&ch, sizeof(Character), 1, file);
 
  
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    fclose(file);
 
  
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    printf("Name: %s\n", ch.name);
 
  
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    printf("Health: %d\n", ch.health);
 
  
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    printf("Damage: %.1f\n", ch.damage);
 
  
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    return 0;
 
  
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}
diff --git a/c-structs/struct.h b/c-structs/struct.h 
  
 1 
typedef struct {
 
  
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    char name[50];
 
  
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    int health;
 
  
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    float damage;
 
  
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} Character;
 
  
 6 
  
diff --git a/c-structs/write.c b/c-structs/write.c 
  
 1 
#include <stdio.h>
 
  
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#include <string.h>
 
  
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#include "struct.h"
 
  
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int main(void) {
 
  
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    printf("Write struct\n");
 
  
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    Character ch;
 
  
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    strcpy(ch.name, "John Doe");
 
  
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    ch.health = 30;
 
  
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    ch.damage = 5.9;
 
  
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    FILE* file = fopen("character.dat", "wb");
 
  
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    if (file == NULL) {
 
  
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        perror("Error opening file");
 
  
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        return 1;
 
  
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    }
 
  
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    fwrite(&ch, sizeof(Character), 1, file);
 
  
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    fclose(file);
 
  
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    return 0;
 
  
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}