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Traversing a string in C

céline -  
 céline -
Hello everyone,
If you could show me how to traverse a string in C.
Thank you
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Marco la baraque Posted messages 1030 Status Contributeur 329
 
Good evening 
 char chaine[] = "Hello!"; int iterateur=0; while(chaine[iterateur] != '\0') { //In C, the character \0 corresponds to the end of your string //Put your code here iterateur++; }


Best regards,
2
céline
 
```c Thank you MARCO
Actually, I have a function "get_word" that should return the words from the string separated by a space


Here’s what I’ve done: is this how you do it when the function returns a string type?
Help pliz
Thank you


char * getword (char[50] line)
{
char word [50];
for(int j=0, j< strlen(line); j++){
if(substr(line, 1, i)=="")
word =substr(line, 1, i);
}
return word
} ```
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Marco la baraque Posted messages 1030 Status Contributeur 329 > céline
 
Hi,
You don't need to complicate your life that much. If you're allowed to modify the input string, you can do this: 
 char * getword (char[50] chaine) { for(int j=0; j<strlen(chaine); j++){ if(chaine[j]==' ') chaine[j]=','; } return chaine; }


On the other hand, if you're not allowed to modify it, I recommend creating a char* of the same size as your input string, going through the string character by character and copying each character into your new string one by one (except when you read a space, in which case you write a comma). It's better than using strcpy (which will go through your string), then going through it again to replace the spaces with commas.
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