Hello, i''ve just started to learn C
this is my code:
Thats the problem:Code:#define MAX 100 char **text ; int lines; printf("number of lines?\n"); scanf("%d",&lines); text = (char**)malloc(linhas*sizeof(char*)); int i=0; do{ text[i] = (char*)malloc(MAX*sizeof(char)); printf("%d) ",i+1); scanf("%(%d)[^\n]",MAX,text[i]); i++; }while(i<lines);
after the first loop iteration, it jumps to the end of loop. what am i doing wrong?
i'm using:
MinGW
Code::Blocks
Last edited by brunovl83; 10-29-2009 at 01:00 PM.
Bad copy and paste here!
Real quick..where are your ';' to terminate the commands? Also there is no need for &word, just use the variable name as this is a pointer.
Some spelling problems seen as well.
Check your return value for your malloc call.
Do not forget to call free().
Last edited by slingerland3g; 10-29-2009 at 12:52 PM.
sorry, i fixed ;POriginally Posted by slingerland3g
This is puzzling. What is your intent here
Should you be using...Code:scanf("%(%d)[^\n]",MAX,text[i]);
Code:scanf("%s",text[i]);
The reason I say, that is because MAX is a constant and can not be assigned to.
i need to catch a string with spaces.
i tried
scanf("%100[\n]",texto[i]);
scanf("%100[]",texto[i]);
scanf("%100[^\n]",texto[i]);
scanf("%s100[^\n]",texto[i]);
with no success
scanf("%100[^\n]",texto[i]);
will work, but to make it dynamic you'll have to form the string FIRST: sprintf(control, "%%%i[^\n]", MAX);
Then you can scanf(control, texto[i]);
Probably, however, you should use fgets().
the better succes until now is when i used:
it skips the first input, although all other lines recieve it's inputs,Code:do{ texto[i] = (char*)malloc(MAX*sizeof(char)); printf("%d) ",i+1); scanf("%*[^\n]",texto[i]); // reads all caracter until '\n' appears. scanf("%*c"); // reads '\n' i++; }while(i<linhas);
That should do the trick. Please keep in mind the dangers of using scanf! If your array is not large enough, scanf will write past it with no problem or a care in the world.
Code:scanf("%[^\n]",text[i]);
That should do the trick. Please keep in mind the dangers of using scanf! If your array is not large enough, scanf will write past it with no problem or a care in the world.
Code:scanf("%[^\n]",text[i]);
I did it!
thank u allCode:do{ texto[i] = (char*)malloc(MAX*sizeof(char)); printf("%d) ",i+1); scanf("%*c"); scanf("%100[^\n]",texto[i]); scanf("%*c"); i++; }while(i<linhas);
