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POCall by reference of a string with double pointer
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copied!<p>Hi guys I got some problems with using a function with a reference to a string as argument. I read that you should use e double pointer for this, but I can't get it to work. This is (partly) my code.</p> <pre><code>enum errCode { ERR_NONE = 0, ERR_EMPTY, ERR_FULL, ERR_MEM, ERR_INIT, ERR_COMMAND, ERR_UNDEFINED }; typedef enum errCode ErrCode; typedef enum { no = 0, add, del, src, show, exit } Command; int main(void) { char stringval[50]; char stringval2[50]; ErrCode err; Command currentCommand = no; printf("Enter a command\n"); if (fgets(stringval, 50, stdin) != NULL) { char *p; if ((p = strchr(stringval, '\n')) != NULL) *p = '\0'; } ErrHandler( extractCommand(&currentCommand, stringval, &stringval2) ); printf("stringval 2 = %s.\n", stringval2); return 0; } ErrCode extractCommand(Command *command, char *inputString, char **outputString) { char *strTemp; char *strTemp2; //Get the first word of the string strTemp = strtok(inputString, " "); strTemp2 = strtok(NULL, " "); *outputString = strTemp2; //Check if it equals a command if (strcmp(strTemp, "exit") == 0) { *command = exit; return ERR_NONE; } else if (strcmp(strTemp, "add") == 0) { *command = add; return ERR_NONE; } else if (strcmp(strTemp, "del") == 0) { *command = del; return ERR_NONE; } else if (strcmp(strTemp, "src") == 0) { *command = src; return ERR_NONE; } else if (strcmp(strTemp, "show") == 0) { *command = show; return ERR_NONE; } else { *command = no; printf("%s", strTemp); return ERR_COMMAND; } } </code></pre> <p>This is what my output looks like:</p> <pre><code>Enter a command add this is a test stringval 2 = z˜ˇøÀo‡èK‡èT¯ˇø. </code></pre> <p>I obviously want to have the second word of the inputted string, but I'm doing something wrong. Thx for the help!</p>

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