Hello. I have a small piece of code here, allowing the user to enter 16 characters from 'a' to
'z'. What would be the best way to make the code check if the character hasn't been entered before (is in the array) ?
Code:for (i=0; i<16; i++){ printf("%d: ",i+1); while(((virsotne[i]=getch())<97) || (virsotne[i]>122)); printf("%c\n",virsotne[i],virsotne[i]); }
You will have to cycle thru the array and compare each number. Write a function to make repeating this easier and pass the array in:
Code:int checkArray (char *array, char ch) { int i, len = strlen(array); for (i=0;i<len;i++) { if (array[i] == ch) return 1; } return 0; }
C programming resources:
GNU C Function and Macro Index -- glibc reference manual
The C Book -- nice online learner guide
Current ISO draft standard
CCAN -- new CPAN like open source library repository
3 (different) GNU debugger tutorials: #1 -- #2 -- #3
cpwiki -- our wiki on sourceforge
Actually I knew the algorithm to use for this array check, but the problem was to include it in the while statement. Somehow I forgot about the possibility of a function there - now everything works, thanks MK27
