}
int main(){
int num = 11111;
printf("int:%ld/n",sizeof(int));
char num_char[100];
char num_char_b64[200];
memset(num_char,'/0',100);
memcpy(num_char,&num,4);
printf("content_to_be_encoded:%s/n",num_char);
int len = encode(num_char,4,num_char_b64);
printf("content_encoded:%s/n",num_char_b64);
int len2= decode(num_char_b64,len,num_char);
printf("%s/n",num_char);
memcpy(&num,num_char,4);
printf("int:%d/n",num);
}