C 向数组中添加结构

所以我的问题如下，我有一个类似超市产品的产品，它的结构由一个标识符标签，它的重量和它的数量组成，我有一个c命令

我想做的是将产品添加到数组中并打印其重量

#include <stdio.h>

int i = 0; // counts the number of products

struct product 
{
   char ident[64]; // string that identifies the product eg. "bread"
   int weight;
   int quant;
};

struct product sistem[10]; // array of products

void add(char ident,int weight,int quant);

struct product make_product(char ident,int weight,int quant)
{
    struct product p1 = {ident,weight,quant};   // creates a product and returns the created product
    return p1;
}

int main() {
    char c; int weight; char ident; int quant;
   scanf("%c %[^:]:%d:%d",&c,ident,&weight,&quant);
   add(ident,weight,quant);

   return 0;
}

void add(char ident,int weight,int quant)
{
   printf("New product %d\n",i);                           //
   sistem[i] = make_product(ident,weight,quant);           // adds a new product into an array of products
   printf("%d\n",sistem[i].weight);                       //
   i++;
}

因此，基本上这并没有保存我在阵列中创建的产品，我似乎无法理解为什么它没有保存

因此，如果有人能帮忙，我将不胜感激。

在scanf中，您使用ident作为单个字符，但它应该是一个64字符的缓冲区。此更改将需要更改代码的其他部分以获得char*ident。此外，您不能像这样使用编译时未知的字符串初始化结构成员，因此您必须使用strcpy作为示例。这应该行得通

#include <stdio.h>
#include <string.h>

int i = 0; // counts the number of products

struct product 
{
   char ident[64]; // string that identifies the product eg. "bread"
   int weight;
   int quant;
};

struct product sistem[10]; // array of products

void add(char *ident,int weight,int quant);

struct product make_product(char *ident,int weight,int quant)
{
    struct product p1 = {"",weight,quant};   // creates a product and returns the created product
    strcpy(p1.ident, ident);
    return p1;
}

int main() {
    char c; int weight; char ident[64]; int quant;
   scanf("%c %[^:]:%d:%d",&c,ident,&weight,&quant);
   add(ident,weight,quant);

   return 0;
}

void add(char *ident,int weight,int quant)
{
   printf("New product %d\n",i);                           //
   sistem[i] = make_product(ident,weight,quant);           // adds a new product into an array of products
   printf("%d\n",sistem[i].weight);                       //
   i++;
}

---

令人困惑的是，在某些地方，您使用ident来表示字符，而在其他地方，您使用ident来表示字符串。

#include <stdio.h>
#include <string.h>

int i = 0; // counts the number of products

struct product 
{
   char ident[64]; // string that identifies the product eg. "bread"
   int weight;
   int quant;
};

struct product sistem[10]; // array of products

void add(char *ident,int weight,int quant);

struct product make_product(char *ident,int weight,int quant)
{
    struct product p1 = {"",weight,quant};   // creates a product and returns the created product
    strcpy(p1.ident, ident);
    return p1;
}

int main() {
    char c; int weight; char ident[64]; int quant;
   scanf("%c %[^:]:%d:%d",&c,ident,&weight,&quant);
   add(ident,weight,quant);

   return 0;
}

void add(char *ident,int weight,int quant)
{
   printf("New product %d\n",i);                           //
   sistem[i] = make_product(ident,weight,quant);           // adds a new product into an array of products
   printf("%d\n",sistem[i].weight);                       //
   i++;
}