if a else v C

Aero · Napísal **Aero**: 03.02.2009 22:15

Chcel som pre jednu slečnu spraviť programik ktory by po napisani jej mena vyhodil obrazok (srdiečko konkretne :-P ) ale vyskytlo sa par problemov a neviem kde je vada :-P zatial som sa dopracoval k tomuto :

Kód:

#include <stdio.h>
#include <stdlib.h>

int main(void)
{
    char m[10], a[10]="tatiana";
printf("Napis svoje meno: "); 
scanf("%s", &m);

if (m=="a")
printf("\n""____________000000____________000000______________ ", m);

else
printf("\n""____________000000____________000000______________ ", m);
printf("\n""__________000000000000______000000000000__________ ", m);
printf("\n""______000000000000000000__000000000000000000______ ", m);
printf("\n""____00000000000000000000000000000000000000000_____ ", m);
printf("\n""___00000000000000___000000000___00000000000000____ ", m);
printf("\n""__000000000000000___000000000___000000000000000___ ", m);
printf("\n""_0000000000000000___000000000___0000000000000000__ ", m);
printf("\n""_0000000000000000___000000000___0000000000000000__ ", m);
printf("\n""_0000000000000000___000000000___0000000000000000__ ", m);
printf("\n""_0000000000___000000000000000000000___0000000000__ ", m);
printf("\n""__000000000___000000000000000000000___000000000___ ", m);
printf("\n""___000000000___0000000000000000000___000000000____ ", m);
printf("\n""_____000000000___000000000000000___000000000______ ", m);
printf("\n""_______00000000____00000000000____00000000________ ", m);
printf("\n""__________0000000_______________0000000___________ ", m);
printf("\n""_____________0000000000000000000000000____________ ", m);
printf("\n""_______________000000000000000000000______________ ", m);
printf("\n""__________________000000000000000_________________ ", m);
printf("\n""___________________000000000000___________________ ", m);
printf("\n""______________________000000______________________ ", m);
printf("\n""_______________________0000_______________________", m);
   
    printf("\n\n\n");
system("PAUSE > nul");
return 0;
}

Viem ze tam je to if a else naopak ale ked zadam ten obrazok ku if tak mi pri else už vyhadzuje chybu .. .asi tam treba oznacit ze pod if patri cely ten obrazov so vsetkymi printf ale neviem jak na to. A pri if (m=="a") ma to ignoruje ze aj ked zadam to co je deklarovane ako "a" tak to proste skoci na else ... uvazovali sme ze by to mohlo mat nieco docienia so stisnutim enteru ale neviem :-P ... s Cčkom som začal tak pred tyždňom čiže som v tom lamka tak mi plz niekto pomožte :-P Dik moc

programator · Napísal **programator**: 03.02.2009 22:41

Kód:

#include <stdio.h> 
#include <stdlib.h> 
#include <string.h> 

int main(void) 
{ 
   char m[255]; 
   printf("Napis svoje meno: "); 
   scanf("%s", m); 

   if (strcmp(m, "tatiana")) 
   {
      printf("Nothing for you...\n");
      system("pause");
      return 0;
   }

   printf("\n\n____________000000____________000000______________\n"); 
   printf("__________000000000000______000000000000__________\n"); 
   printf("______000000000000000000__000000000000000000______\n"); 
   printf("____00000000000000000000000000000000000000000_____\n"); 
   printf("___00000000000000___000000000___00000000000000____\n"); 
   printf("__000000000000000___000000000___000000000000000___\n"); 
   printf("_0000000000000000___000000000___0000000000000000__\n"); 
   printf("_0000000000000000___000000000___0000000000000000__\n"); 
   printf("_0000000000000000___000000000___0000000000000000__\n"); 
   printf("_0000000000___000000000000000000000___0000000000__\n"); 
   printf("__000000000___000000000000000000000___000000000___\n"); 
   printf("___000000000___0000000000000000000___000000000____\n"); 
   printf("_____000000000___000000000000000___000000000______\n"); 
   printf("_______00000000____00000000000____00000000________\n"); 
   printf("__________0000000_______________0000000___________\n"); 
   printf("_____________0000000000000000000000000____________\n"); 
   printf("_______________000000000000000000000______________\n"); 
   printf("__________________000000000000000_________________\n"); 
   printf("___________________000000000000___________________\n"); 
   printf("______________________000000______________________\n"); 
   printf("_______________________0000_______________________\n"); 
   printf("________________________00________________________\n\n\n");

   system("pause");
   return 0; 
}

Je potrebne zadat slovo "tatiana", aby sa dostavil pozadovany efekt...

Aero · Napísal autor témy **Aero**: 03.02.2009 23:13

Dik moc za pomoc

Vidno že v tom mam ešte veľmi malo vedomosti nakoľko si tam pridal nejaky prikaz čo nemam šajn čo robi a nejaku dalšiu knižnicu :-D

ešte raz diky

neutronmind · Napísal **neutronmind**: 04.02.2009 17:17

Ide o to, ze nemozes porovnavat dve polia (resp. retazce) naraz, ale znak po znaku - a to prave robi funkcia strcmp(). V pripade ze sa tieto retazce nerovnaju (teda vrati 1), program skonci. Je deklarovana v hlavickovom subore string.h, preto tam je to #include <string.h>

Aero · Napísal autor témy **Aero**: 04.02.2009 21:22

Aha ďakujem za vysvetlenie :-P Take niečo spominala aj učiteľka Cčka ale zaprve som jej chapal len z častia aza druhe som nevedel ako porovnavať znak po znaku

Watik · Napísal **Watik**: 07.02.2009 14:36

dobre ako mozno sa myslim ale pri tom scanf si nezabudol znak & ??? viem ze malickost len ma to zarazilo ze to tam nie je

Kód:

scanf("%s",&m);

juho · Napísal **juho**: 07.02.2009 15:24

no pretoze pri retazci sa to tam nedava pretoze m znamena ze ukazuje na dany retazec takzetak

neutronmind · Napísal **neutronmind**: 07.02.2009 17:26

Hej, identifikator retazca predstavuje adresu prveho prvku (teda m je v podstate pointer), takze na ziskanie tejto adresy nepotrebujes referencny operator &...

Watik · Napísal **Watik**: 08.02.2009 16:51

aha dakujem za vysvetlenie

if a else v C

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