Thread: Help on extracting word from a string and store it on a int variable

Hi,

I'm writing a program where user need to enter a command with some parameters. Something like, "please insert your choice:account change 123" where I need to get the "123" inside a integer variable.

I've made some search but I was not able to find any answer. This is what I have so far:

Code:

	char s[50],ch;

	int valor[10];

	     int i,c=0,d=0;

	     printf("Enter any string : ");
	     for(i=0;ch!='\n';i++){
	     ch=getchar();
	     printf("-%c",ch);
	     s[i]=ch;
	     }
	     s[i]='\0';

	     for(i=0;s[i]!='\0';i++){
	    if(s[i]==' '){

	       c++;

	    }
	    if(c==2 && s[i]!=' '){
	    	printf("%c",s[i]);
	    	valor[d]=s[i];
	    	d++;
	    }
	     }
	     printf("\n\nTotal words are %d",c+1);
	     printf("\n\n are %i", valor);

Can someone help me on this?

Thanks for your help.

Regards
SP

Any other solution to acheive the same objective is also welcome. Thanks again for your help.

Use fgets on stdin to read a line of input. Then use sscanf to parse out any strings or numbers you need.

Thanks. That one made the job!

Here is the code to help anyone out there:

Code:

char temp[50],tipo1[20], tipo2[20];
	int v1;

	printf("operacao:");
	fgets(&temp,255,stdin);

	printf("\n%s", &temp);

	sscanf(temp,"%s %s %i",&tipo1,&tipo2,&v1);

	printf("\n%s",&tipo1);
	printf("\n%s",&tipo2);
	printf("\n%i",v1);

Code:

	printf("operacao:");
	fgets(&temp,255,stdin);        // drop &
 
	printf("\n%s", &temp);            // drop &

	sscanf(temp,"%s %s %i",&tipo1,&tipo2,&v1);  // & not needed except v1

	printf("\n%s",&tipo1);        // drop &
	printf("\n%s",&tipo2);        // drop &
	printf("\n%i",v1);

That should *NOT* work. Question 12.12b

man strtok

STRTOK(3) NEWLIB

NAME
6.37 `strtok', `strtok_r', `strsep'--get next token from a string

SYNOPSIS
#include <string.h>
char *strtok(char *SOURCE, const char *DELIMITERS)
char *strtok_r(char *SOURCE, const char *DELIMITERS,
char **LASTS)
char *strsep(char **SOURCE_PTR, const char *DELIMITERS)

DESCRIPTION
The `strtok' function is used to isolate sequential tokens in a null-terminated string