我有一项作业，要求我解码摩尔斯电码字符串。作业指定：
-字符之间没有空格（例如。和-之间的空格）
-每个字符之间用1个空格隔开
-每个单词用4个空格隔开
到目前为止，我有：
//Function to convert Morse code to text
char morsecode_to_text(char input[], int index){
int index_1 = 0, index_2 = 0, x = 0;
char output[100] = {'\0'};//Variable to keep output and later used to display text
char string[50] = {'\0'};//Variable to combine output
char *characters[] = {"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M","N", "O", "P", "Q", "R", "S", "T", "U",
"V", "W", "X", "Y", "Z", "1", "2", "3", "4", "5", "6", "7", "8", "9", "0"};
char *morsecode[] = {".-","-...","-.-.","-..",".","..-.","--.","....","..",".---", "-.-",".-..","--","-.","---",".--.","--.-",
".-.","...","-","..-", "...-",".--","-..-","-.--","--..", ".----","..---","...--","....-", ".....", "-....",
"--...","---..","----.","-----"};
while(input[index] < 1000){
if(input[index] != '\0'){
if(input[index] == '.' || input[index] == '-') {
//Compare if input Morse code is similar to Morse code in array
while(input[index] == '.' || input[index] == '-'){
string[index_1] = input[index];
index += 1;
++index_1;
}//end of while loop
for(index_2=0;index_2<36;index_2++){
if(strcmp(string, morsecode[index_2]) == 0){
strcat(output, characters[index_2]);
x = 1;}
}//end of for loop
memset(string,0,sizeof(string));
//Check for spaces
}else if(input[index] == ' '){
if(input[index + 1] == ' ') {
if((input[index + 2] == ' ') && (input[index + 3] == ' ')){
strcat(output," ");
index += 4;
}else{
strcpy(output, "FAIL - WRONG MORSE CODE");
break;}
}else
index++;
}else if(input[index] == '\0' || input[index] == '\n'|| input[index] != '.' || input[index] != '-'){
break;}
}else
break;
}//end of while loop
if (x == 1){
printf("MORSE CODE TRANSLATED : SUCCESS - %s", output);
}else{
strcpy(output,"FAIL - WRONG MORSE CODE");
printf("%s", output);
}
}//end of Function to convert Morse code to text
void main()
{
char input[1000] = {'\0'}; //User input
char choice = 'y'; //Amount of time user wants to replay
int index = 0;
do{
system("cls");
printf("MORSE CODE TRANSLATOR PROGRAM\n");
printf("\nPlease enter a Morse code string: ");
fgets(input,1000,stdin);
morsecode_to_text(input, index);
printf("\n\nDo you want to try again? (Press 'y' for Yes and 'n' for No): ");
scanf("%c", &choice);
getchar();
}while(choice == 'y');//end of while loop
}//end of void main
我的输出应该看起来像这样： Example of Morse Code Translator Program execution
但是空格功能无法正常工作，因此显示以下内容：Output of code
提前谢谢！
答案 0 :(得分：-1)
使用查找表的非常简单的
一个非.或'-'-分隔字符
多个空格-单词。
const char *getLetter(const char *morse, int *ch)
{
char coded[10];
const char *startpos = morse;
while(*morse && *morse!= '.' && *morse != '-')
morse++;
if(!*morse) return NULL;
startpos = morse;
while(*morse && (*morse== '.' || *morse == '-'))
morse++;
if ((startpos - morse) > 9) return NULL;
strncpy(coded, startpos, morse - startpos);
coded[morse - startpos] = 0;
*ch = -1;
for(int index = 0; index < sizeof(morsecode) / sizeof(morsecode[0]); index++)
{
if(!strcmp(morsecode[index], coded))
{
*ch = characters[index][0];
break;
}
}
return morse;
}
int IsSpace(const char *morse)
{
return *morse && *morse ==' ' && *(morse + 1) == ' ';
}
int main(void)
{
char *morsestring = ".- -... -.-. -.. .- -... -.-. -.. ----------";
int ch = 0;
const char *nextpos = morsestring;
while((nextpos = getLetter(nextpos, &ch)) != NULL)
{
if(ch == -1)
{
printf(" *ERR* ");
}
else
{
printf("%c%s", ch, IsSpace(nextpos) ? " " : "");
}
}
printf("\n");
}
答案 1 :(得分：-1)
#include<stdio.h>
#include<iostream>
#include<conio.h>
#include<stdlib.h>
#include<string.h>
//See Easy instructions and have Fun of the Program
using namespace std;
void convert(char s[]);
void clrscr()
{
system("@cls||clear");
}
int main()
{
clrscr();
char string[100];
cout<<"INSTRUCTIONS : \n\n";
cout<<"1. Enter leaving single SPACE (like) : To enter MAN -> -- .- -. ";
cout<<endl<<"2. To Give SPACE, Enter s (small s) with Space (like) : To Enter MR A -> -- .-. s .-";
cout<<endl<<endl<<"SIMPLE !";
getch();
cout<<endl;
cout<<"Enter the Code to Convert into STRING : \n";
gets(string);
cout<<endl<<endl;
cout<<"Converting ....";
getch();
clrscr();
//for(int i =0 ; i < strlen(string) ; i++)
convert(string);
getch();
return 0;
}
void convert(char s[])
{
int j=0;
int i=0;
int c=0;
int add=0;
char a[10];
char f[100];
while(s[j] != '\0')
{
c=0;
while (c != 5)
{
a[c]='\0';
c++;
}
i=0;
while( s[j] != ' ' && s[j] != '\0')
{
a[i] = s[j];
j++;
i++;
}
if(s[j]== ' ' ){j++;}
a[i+1]='\0';
if(strcmp(a,".-") == 0)
{
f[add]='A';
add++;
f[add]='\0';
}
else if(strcmp(a,"-...") == 0){f[add]= 'B'; add++; f[add]='\0';}
else if(strcmp(a,"-.-.") == 0){f[add]= 'C'; add++; f[add]='\0';}
else if(strcmp(a,"-..") == 0){f[add]= 'D'; add++; f[add]='\0';}
else if(strcmp(a,".") == 0){f[add]= 'E'; add++; f[add]='\0';}
else if(strcmp(a,"..-.") == 0){f[add]= 'F'; add++; f[add]='\0';}
else if(strcmp(a,"--.") == 0){f[add]= 'G'; add++; f[add]='\0';}
else if(strcmp(a,"....") == 0){f[add]= 'H'; add++; f[add]='\0';}
else if(strcmp(a,"..") == 0){f[add]= 'I'; add++; f[add]='\0';}
else if(strcmp(a,".---") == 0){f[add]= 'J'; add++; f[add]='\0';}
else if(strcmp(a,"-.-") == 0){f[add]= 'K'; add++; f[add]='\0';}
else if(strcmp(a,".-..") == 0){f[add]= 'L'; add++; f[add]='\0';}
else if(strcmp(a,"--") == 0){f[add]= 'M'; add++; f[add]='\0';}
else if(strcmp(a,"-.") == 0){f[add]= 'N'; add++; f[add]='\0';}
else if(strcmp(a,"---") == 0){f[add]= 'O'; add++; f[add]='\0';}
else if(strcmp(a,".--.") == 0){f[add]= 'P'; add++; f[add]='\0';}
else if(strcmp(a,"--.-") == 0){f[add]= 'Q'; add++; f[add]='\0';}
else if(strcmp(a,".-.") == 0){f[add]= 'R'; add++; f[add]='\0';}
else if(strcmp(a,"...") == 0){f[add]= 'S'; add++; f[add]='\0';}
else if(strcmp(a,"-") == 0){f[add]= 'T'; add++; f[add]='\0';}
else if(strcmp(a,"..-") == 0){f[add]= 'U'; add++; f[add]='\0';}
else if(strcmp(a,"...-") == 0){f[add]= 'V'; add++; f[add]='\0';}
else if(strcmp(a,".--") == 0){f[add]= 'W'; add++; f[add]='\0';}
else if(strcmp(a,"-..-") == 0){f[add]= 'X'; add++; f[add]='\0';}
else if(strcmp(a,"-.--") == 0){f[add]= 'Y'; add++; f[add]='\0';}
else if(strcmp(a,"--..") == 0){f[add]= 'Z'; add++; f[add]='\0';}
else if(strcmp(a,"s") == 0 ){f[add]=' '; add++; f[add]='\0';}
}
cout<<f;
}