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2
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1 void itoa(int n, char *a)
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2 {
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3 if(n < 0) {
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4 *a++ = '-';
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5 n *= -1;
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6 }
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7 char *b = a;
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8 if(!n) *b++ = '0';
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9 for(; n; b++) {
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10 *b = n%10 + '0';
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11 n = n/10;
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12 }
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13 *b-- = '\0';
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14 for(; a < b; a++, b--) { //reverse
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15 char temp = *b;
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16 *b = *a;
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17 *a = temp;
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18 }
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19 }
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20
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21 int atoi(char *a)
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22 {
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23 int neg = 0;
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24 int n = 0;
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25 if(*a == '-') {
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26 neg = 1;
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27 a++;
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28 }
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29 while(*a >='0' && *a <= '9')
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30 n = n*10 + (*a++ - '0');
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31 if(neg) n *= -1;
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32 return n;
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33 }
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34
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35 void sPrint(char *a)
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36 {
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37 char *b = a;
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38 while(*b && *++b);
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39 putline(a, b - a);
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40 }
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41
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42 void iPrint(int n)
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43 {
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44 char string[10];
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45 itoa(n, string);
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46 sPrint(string);
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47 }
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48
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49 int strcmp(char *a, char *b)
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50 {
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51 while(1) {
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52 if(*a - *b) return *a - *b;
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53 if(*a == '\0') return 0;
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54 a++;
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55 b++;
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56 }
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57 return -1;
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58 }
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59
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60 void sGet(char *a, unsigned int n) //TODO bug Jeff about getline
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61 {
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62 int length = getline(a, n);
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63 a[(length < n)?length:n - 1] = '\0';
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64 }
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65
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66 int arrayLookup(char *text, const char array[][10], int last)
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67 {
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68 int i;
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69 for(i = 0; i < last; i++)
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70 if(!strcmp(array[i], text)) return i;
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71 return last;
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72 }
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