C Program to input a users string

[Travercraig]

I have this simple string program in C that reads a users input and outputs it to a console window.

 

However for some reason if a user enters a string with a space in, it only outputs the first word, and terminates after the first space.

 

As shown in the image:

 

Here is the code:

#include <stdio.h>int main(){    char str[80];			printf("Enter a string less than 80 characters: \n");		scanf("%s", str);		printf("Your string is: %s\n", str);	    return 0;}

[mikat]

 

I have this simple string program in C that reads a users input and outputs it to a console window.

 

However for some reason if a user enters a string with a space in, it only outputs the first word, and terminates after the first space.

 

As shown in the image:

 

Here is the code:

#include <stdio.h>int main(){    char str[80];			printf("Enter a string less than 80 characters: \n");		scanf("%s", str);		printf("Your string is: %s\n", str);	    return 0;}

i know nothing about c, but what i do know from other programming languages, that sometimes inputs with a space in it need to be tables and then every word is a new string in the table

example:

hello there worldis converted to:input (whatever you want) = ['hello', 'there', 'world']in lua, should be the same in c i think

[Nineshadow]

#include <stdio.h>#include <stdlib.h>#include <string.h>#define SIZE 80int main(){    char *c=(char*)malloc(SIZE);    printf("Enter a string less than 80 characters: \n");    fgets(c, SIZE , stdin);    if ((strlen(c)>0) && (c[strlen (c) - 1] == '\n'))        c[strlen (c) - 1] = '\0';    printf("%s" , c);    free(c);    return 0;}

Also , for the future :

fgets is a better choice than scanf.

[zMeul]

I don't have a cpp compiler on hand, but if memory serves, 'space' is considered white space - and cpp won't output it

it treats it similarly to EOL (enter), TAB and others

you should google around for bypassing this issue

[noisehater]

I don't have a cpp compiler on hand, but if memory serves, 'space' is considered white space - and cpp won't output it

it treats it similarly to EOL (enter), TAB and others

you should google around for bypassing this issue

Well you are almost right. The function scanf and it's derivations stop string at spaces (if you're not using the [] parameter)

There is a way to reconfigure it with [ ] this option but because of its possibility to help stack smashing it is highly recommended to use fgets with a buffer or fgetc in a loop. 

I hope this could help somehow.

[zMeul]

Well you are almost right. The function scanf and it's derivations stop string at spaces (if you're not using the [] parameter)

There is a way to reconfigure it with [ ] this option but because of its possibility to help stack smashing it is highly recommended to use fgets with a buffer or fgetc in a loop. 

I hope this could help somehow.

I haven't coded somethin in over 17y, I'm just remembering stuff at this point

[Travercraig]

I read some slides based on a c programming book and found this: