Question

我在第9行遇到语法错误并解析第31,32,33和38行的错误......我不知道为什么。任何人都可以帮助我吗？

#include stdio.h<> <-----there are all correct in the code but don't show on here
#include stdlib.h<>
#include math.h<> 

int hamlength;
int pbit;
int hamcode;

String char  *hamming = NULL;

void enter_params(){
    printf("Enter length of the Hamming code:_\n");
      scanf("%d",&hamlength);
 printf("Enter the parity(0=even, 1=odd):_\n");
      scanf("%d",&pbit);
    hamming = (char *)malloc(hamlength * sizeof(char));
}

void free_memory(){
if (hamming != NULL)
    free (hamming);
return;
}

 1. List item

void correct_hamming(){
int errorBit=0;
int currentBit;
int i;
int j;
int k;
printf("Enter the Hamming Code:_\n");
scanf("%s", hamming);
for(i = 1, i < hamlength; i = i * 2){
for(j = i; j < hamlength; j += 2 * i){
for(k = j; k < hamlength && k < currentBit; k++){
        currentBit = currentBit ^ hamming [hamlength - k];
        if (k != i)
        currentBit = currentBit ^ hamming[hamlength - k];       
}
errorBit += ((currenttBit ^(hamming[hamlength - i] - '0')) + i);
}
}
}
int main(){
      int choice=0;
      while(choice!=3){
         printf("1) Set parameters\n");
         printf("2) Check Hamming Code\n");
         printf("3) Exit\n");        
         printf("Enter selection:_\n");
            scanf("%d",&choice);
         switch(choice){
            case 1: enter_params(); 
               break; 
            case 2:  correct_hamming();
               break;
           case 3: printf("dueces!");
                    break;


         }
      }
      return 0;
   }

Answer 1

#include stdio.h<> <-----there are all correct in the code but don't show on here
#include stdlib.h<>
#include math.h<>

你的意思是

#include <stdio.h> 
#include <stdlib.h>
#include <math.h>

String char *hamming = NULL;

String在这做什么？它不是C关键字。从该行中删除String。您的代码充满了语法和逻辑错误。

 1. List item // should be commented

errorBit += ((currenttBit ^(hamming[hamlength - i] - '0')) + i);

这里的错字currenttBit应该是currentBit

for(i = 1, i < hamlength; i = i * 2)

将,替换为;

在main()函数

中

  int choice=0;
  while(choice!=3)

用户什么时候输入他的选择？

Answer 2

#include<stdio.h>    // this is the right way to include header files
#include<stdlib.h>
#include<math.h>

String不是String char *hamming = NULL;

中C的有效关键字/数据类型

1. List item在C中无效。

Answer 3

String char *看起来不对我。你可能并不想在那里加入String。

Answer 4

删除第9行的“字符串”。

并更改此行：

for(i = 1, i < hamlength; i = i * 2){

到此

for(i = 1; i < hamlength; i = i * 2){

我假设你的代码“1.列表项目”并不存在。

语法和解析错误

4 个答案: