删除char*变量前后的空格

 

删除char*变量前后的空格

 

/*Delete the blank that is in char* varible*  
 * TODO Robin*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
char* eat_sp_mcw(char *src){
    /* char * ori = strdup(src);
       char * des =  malloc(128);
       printf("ori = %s\n", ori);
       printf("src = %s\n", src);
       printf("des 0 = %s\n", des);
       while(*ori){
       if(*ori != ' '){
     *des = *ori;
     des++;
     }
     ori++; 
     }
     printf("des 1 = %s\n", des);
     *des = '\0';
     printf("des 2 = %s\n", des);
     return des;*/
        char * s = strdup(src);
        char *e;
        while (*s == ' ') ++s;
        if (*s)
            for (e = s + strlen(s); *--e == ' '; *e = '\0');
        return s;
}
int main(int argc, char** argv, char** envp){
    char * c1 = "  china  ";
    printf("%s\n", eat_sp_mcw(c1));
    return 0;
}