使用C的字符串数组中的内存不足

Question

I have a string array like this:

char **strArray;

this array is full and i can print its contents by this method:

while(*strArray){
printf("%s\n",*(strArray++));
}

This works normally. But when i use this:

while(*strArray){
process(*(strArray++));
}

I take out of memory error on second string in array. It runs for first string, but fails when goes for second.

Thanks for help!

---

Process method is like below:

process(char *line)
{
char *server_id,*delimiter,*outputMessage,*capacity_str;
int capacity;
delimiter = " ";
strtok(line,delimiter);
server_id = (char *)strtok(NULL,delimiter);
capacity_str = (char *)strtok(NULL,delimiter);
capacity = atoi(capacity_str);
curr_server = (server *)malloc(sizeof(server));
curr_server->server_id = server_id;
curr_server->capacity = capacity;
curr_server->full_capacity = 0;
curr_server->next = head_server;
head_server = curr_server;
strcpy(outputMessage , "server added ");
strcat(outputMessage,server_id);
strcat(outputMessage,"~");
strcat(outputMessage,capacity_str);
strcat(outputMessage,"\n");
writeOutput(outputMessage);
}

Answer 1

outputMessage needs to be allocated before you strcpy/strcat to it. I'm surprised you get an out of memory error and not just a segmentation fault.