root/misc/miscstr.c

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

/* non zero if it is */
int isstrchar(char *str, int (*ischar)(int c))
{
        while(*str && ischar(*str))
                str++;
        return *str ? 0 : 1;
}

char *last_token(char *string, char tok)
{
        int i;
        while(*string == tok)
                string++;
        return string;
}

void strip_char(char *string, char char_to_strip)
{
        int i; 
        char *p;
        for(i=0; i<strlen(string); i++) {
                if(string[i]==char_to_strip) {
                        p=last_token(&string[i], char_to_strip);
                        strcpy(&string[i], p);
                }
        }
}



int main()
{
        char string[]="a line with spaces, too   many        spaces    event \ttab"; 
        printf("before: \"%s\"\n", string);
        strip_char(string, ' ');
        printf("after: \"%s\"\n", string);
        strip_char(string, '\t');
        printf("after: \"%s\"\n", string);

        char *gh="UHiMMMMMMMM";

        printf(": %s :", gh);

        if(!isstrchar(gh, isalpha))
                printf("Negative\n");
        else
                printf("Positive\n");
}