Question

i have an array of type char

char *arg[100]

this array its reading the data from somewhere, when that when i print arg[0], it prints the value “help”, and when i print the arg[1], it prints the value “exit”.. as an example

what i want exactly is to change the arg[0] from “help” to anything else, like “man”

how i can do that???

thank you

the code:

int executeCommands(char arg31[])
{       
    pid_t pid;
    int status,number; 
    char *arg3[10]; 
    //char str2[21]; 
    x = 0;
    arg3[x] = strtok(arg31, " \n\t");//this line to tokenize every commands and its arguments from the                          passed array of chars (which is the command)
    while(arg3[x])
    arg3[++x] = strtok(NULL, " \n\t");

    if(NULL!=arg3[0])
    {

        if(strcasecmp(arg3[0],"cat")==0) //done
        {
            int f=0,n;
            char l[1];
            struct stat s;
            if(x!=2)
            {
                    printf("Mismatch argument\n");
                return 0;

            }
else if(strcmp(arg3[0],"help")==0) // done 
        {

            if (strcmp(arg3[1],"cat")==0)
                printf("1");
            else if(strcmp(arg3[1],"rm")==0)
                printf("1");
            else if(strcmp(arg3[1],"rmdir")==0)
                printf("1");
            else if(strcmp(arg3[1],"ls")==0)
                printf("1");
            else if(strcmp(arg3[1],"cp")==0)
                printf("1");
            else if(strcmp(arg3[1],"mv")==0)
                printf("1");
            else if(strcmp(arg3[1],"hi")==0)
                printf("1");
            else if(strcmp(arg3[1],"exit1")==0)
                printf("1");
            else if(strcmp(arg3[1],"sleep")==0)
                printf("1");
            else if(strcmp(arg3[1],"history")==0)
                printf("1");
            else if(strcmp(arg3[1],"type")==0)
                printf("1");
            else
            {   char manarg[] = "man\t";
                arg3[0] = strtok(manarg, " \n\t");
                executeCommands(arg3);
            }
            writeHistory(arg3);
        } 

Answer 1

this should put something else in :-

strcpy(arg3[0], "blah");

boiling your function right down, this compiled just fine for me :-

int executeCommands(char arg31[])
{           
    char *arg3[10]; 

    arg3[0] = arg31;

    strcpy(arg3[0], "blah");
    return 0;
}