字符串格式 “123,345,124,1234,123,4”
分割解析 成 123 345 124 1234 123 4
动态开辟空间

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

char **name = NULL;

//获取字符串个数
int get_extend_code_num(char * str)
{
    int len = strlen(str);
    char comma = ',';
    int i= 0;
    int count = 1;
    while(i < len){
        if(str[i] == comma){
            count++;
        }
		i++;
    }
    return count;
}

int get_extend_code(char *str,int num ,char **test)
{
	const char s[2] = ",";
	char *token;
	int i = 0;

	/* 获取第一个子字符串 */
	token = strtok(str, s);
	/* 继续获取其他的子字符串 */
	while( token != NULL ) {
		test[i] = (char*)malloc(strlen(token)+1);
		strcpy(test[i],token);
		printf( "%s\n", token );
		token = strtok(NULL, s);
		i++;
	}
	return 0;
}

void name_free(char** test,int num)
{	
	int i = 0;
	for(;i<num;i++){
		free(test[i]);
	}
	free(test);
}

int main()
{
	char test1[] = "123,345,124,1234,123,4";
	int num = get_extend_code_num(test1);
	printf("%s has %d str\n",test1,num);
	char*** test = &name;
	*test = calloc(num,sizeof(char*));
	get_extend_code(test1,num,*test);
	int i = 0;
	while(i<num){
		printf("%s ",name[i]);
		i++;
	}
	printf("\n");
	name_free(*test,num);
	return 0; 
}

效果