searching ><

This is a discussion on searching >< within the C Programming forums, part of the General Programming Boards category; typedef struct person{ char code[20]; char name[100]; struct person *next; } ListPerson; typedef ListPerson *PersonPtr; hi , i have a ...

  1. #1
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    searching ><

    typedef struct person{
    char code[20];
    char name[100];
    struct person *next;
    } ListPerson;

    typedef ListPerson *PersonPtr;


    hi , i have a linked list structure like above.
    code stores a 10 digits numbers
    ie 1234567891

    how can i only extract the first two digits of code, ie , in this case 12

    i tried this

    void searchCode(PersonPtr list,char cmd[20]){

    PersonPtr tmp;
    char command[MAXCODE];
    int i;

    for(tmp=list;tmp!=NULL;tmp=tmp->next){
    for(i=0;i<2;i++){
    command[i] = tmp->code[i];


    if(strcmp(command,cmd)==0){
    printf("%s,%s",tmp->ode,tmp->name)
    return;
    }
    }


    but it doesn't work ><
    can someone help me ?

  2. #2
    and the hat of wrongness Salem's Avatar
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    Use....
    if ( strncmp(tmp->code,cmd,2) == 0 ) {
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
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