语法错误很小，无法找出 [英] got small syntax error cant find out

问题描述

#include< stdio.h>
#define SALESPEOPLE 5
 #define PRODUCT 6
  int  main( void )
{
    char * P [PRODUCT] = {" ，" ，" ， 产品4"};
     int 推销员；
     int 计数；
    printf(" ， 销售员"， ，" ，" ，" ，" )；
     for (计数=  0 ； Count< PRODUCT； Count ++){
        printf(" )；
        scanf(" ，& Product  1  [Count]);
    }
     for (计数=  0 ； Count< PRODUCT； Count ++){
        printf(" )；
        scanf(" ，& Product  2  [Count]);
    }
     for (计数=  0 ； Count< PRODUCT； Count ++){
        printf(" )；
        scanf(" ，& Product  3  [Count]);
    }
     for (计数=  0 ； Count< PRODUCT； Count ++){
        printf(" )；
        scanf(" ，& Product  4  [Count]);
    }
     for (计数=  0 ； Count< PRODUCT； Count ++){
        printf(" )；
        scanf(" ，& Product  5  [Count]);
    }
     for (salesman =  1 ；推销员< SALESPEOPLE；推销员++){
       printf(" ，业务员，产品 1  [Count]，产品 2  [Count]，产品 3  [Count]，产品 4  [Count]，产品 5  [Count])；
    }
    返回  0 ;
} 

我在代码中遇到一个小错误，也许是语法错误.我找不到答案，我可以知道问题出在哪里吗?

解决方案

不要在变量名中使用空格.在上面的代码中，您使用产品1，产品2时，该空间在扫描和打印时会产生问题.前2个错误):

错误1错误C2065:产品":未声明的标识符
错误2错误C2143:语法错误:``常量''之前缺少``)''

Visual Studio指向以下行

scanf("%f", &Product 1[Count]);

因此，正如 vishal_kapoor 所指出的那样，您使用了无效的标识符(标识符中不能使用space).

代码.

1-每个人都指出了Product 1变量中的空间问题.
2- Product1或Product2未声明，因此您不能将它们用作变量名.请使用P或声明所需的变量.
3-您将PRODUCT定义为6并仅初始化数组中的4个字符串:正常吗?
4-我认为P的类型不正确.您将其声明为字符串数组，并使用"Product 1"，"Product 2"，...对其进行初始化，但是之后您要求用户为每个产品输入字符串.因此，我认为您要为产品数组的每个条目存储多个字符串，而不仅仅是1个字符串.
5-您的最终循环很奇怪.我认为您想打印出与salesman相关的所有产品，但是您只有1个循环(对于salesman)，即使使用Count索引也没有产品循环.
6-您的产品循环看起来一样(或几乎一样).不建议执行复制/粘贴操作，例如，应使用循环将其弄清楚.

我可能是错的，但如果我理解得很好，您想定义一个销售员列表，并为每个销售员关联一个产品列表，最后打印出所有这些表.
如果我是对的，那么您应该声明一个销售员数组，并且不仅要声明一个产品数组，而且要声明与您的销售员数量一样多的数组.

#include <stdio.h>
#define SALESPEOPLE 5
#define PRODUCT 6
int main(void)
{
    char* P[PRODUCT] ={"Product 1","Product 2","Product 3","Product 4"};
    int salesman;
    int Count;
    printf("%s%13s%18s%23s%28/n", "Salesperson", "P1", "P2","P3","P4","P5");
    for(Count=0; Count< PRODUCT; Count++){
        printf("Enter 5 value of product 1 by each respectively salesperson");
        scanf("%f", &Product 1[Count]);
    }
    for(Count=0; Count< PRODUCT; Count++){
        printf("Enter 5 value of product 2 by each respectively salesperson");
        scanf("%f", &Product 2[Count]);
    }
    for(Count=0; Count< PRODUCT; Count++){
        printf("Enter 5 value of product 3 by each respectively salesperson");
        scanf("%f", &Product 3[Count]);
    }
    for(Count=0; Count< PRODUCT; Count++){
        printf("Enter 5 value of product 4 by each respectively salesperson");
        scanf("%f", &Product 4[Count]);
    }
    for(Count=0; Count< PRODUCT; Count++){
        printf("Enter 5 value of product 5 by each respectively salesperson");
        scanf("%f", &Product 5[Count]);
    }
    for(salesman=1 ; salesman<SALESPEOPLE ; salesman++){
       printf("%5s%13s%18s%23s%28s/n", salesman, Product 1[Count],Product 2[Count], Product 3[Count], Product 4[Count], Product 5[Count]);
    }
    return 0;
}

i encounter a small error in my code, maybe is syntax error. I cant find it out, may i know where is the problem?

解决方案

Don''t use space in the variable names. In above code you used Product 1, Product 2, this space will create a problem while scanning and printing.

Compiler messages are usually pretty informative, trying to compile your code gives me (reporting just the first 2 errors):

Error 1 error C2065: ''Product'' : undeclared identifier
Error 2 error C2143: syntax error : missing '')'' before ''constant''

with Visual Studio pointing to the following line

scanf("%f", &Product 1[Count]);

Hence, as already noted by vishal_kapoor, you used invalid identifiers (space cannot be used in identifiers).

There are several problems in your code.

1- Everybody pointed out the space problems in Product 1 variable.
2- Product1 or Product2 are not declared so you can''t use them as variable names. Use P instead, or declare the variables you need.
3- You define PRODUCT as 6 and initialize only 4 strings in your array: is it normal?
4 - I think type of P is not correct. You declare it as a string array, initialize it with "Product 1", "Product 2", ..., but after that you ask the user to enter a string for each product. Therefore, I think you want to store several strings for each entry of your product array, and not only 1 string.
5 - Your final loop is strange. I think you want to print out all products associated to a salesman but you have only 1 loop (for salesman), and no loop for products even though you use Count index.
6 - Your products loops look like the same (or almost the same). Doing copy/paste is not recommanded, you should try to make it clearer, using a loop for example.

I might be wrong, but if I understood well, you want to define a list of salesmen, and for each salesman associate a list of products, and finally print out a table of all that.
If I am right, then you should declare 1 array of salesman, and declare not only 1 array of products, but as many arrays as you have salesmen.

这篇关于语法错误很小，无法找出的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！