Thread: Help with reading in input

Code:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

#define DELIM " "
#define BUF_SIZE 100
void *safe_malloc(void *buf,int size);
    
int
main(int argc, char** argv)
{
    char *buf;
    char *word;
    char *ch;
    char Insertion[] = "i"; 

    buf = (char *)safe_malloc((void *)buf,BUF_SIZE+1);
    while((buf=fgets(buf,BUF_SIZE+1,stdin))!=NULL)
    {
        word = strtok(buf, "DELIM , \n");
        switch (strcmp(word,Insertion))
        {
            case 0:
            ch = strtok(NULL, "DELIM, \n");
                if(ch == NULL)
            
            {
                printf("insert interger\n");
            }
            else 
                printf("ok\n");
            
            break;
            default:
            printf("please type into the input a command to use in the BST\n");
            break;
        }
    }

        return 0;
}

void *safe_malloc(void *buf,int size)
{

    if((buf=(char *)malloc(size))==NULL)
    {
        fprintf(stderr,"Cannot allocate memory for buffer\n");
        exit(1);
    }
                          

        return(buf);
}

Yep heres what i have so far. This produces no compile errors but what i wanna know is how do i check to see if the next token is an integer

Hi , thanks for your reply.
Actually DELIM was defined on top as a " " space.
How do i convert the string to an integer?