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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <string.h>
  4.  
  5. void
  6. itoa(int num, char *str) {
  7.     int i = 0, digit;
  8.  
  9.     while (num > 0) {
  10.         digit = num % 10;
  11.         str[i] = (char)digit + '0';
  12.         num = num / 10;
  13.         i++;
  14.     }
  15.  
  16.     str[i] = '\0';
  17.  
  18.     return;
  19. };
  20.  
  21. void
  22. increment_record(char unique_arr[32]) {
  23.     int num;
  24.     char str_buffer[32+1];
  25.  
  26.     /* Force compiler to accept that it's a number */
  27.     num = atoi((unique_arr));
  28.     printf("%i\n", num);
  29.     num++;
  30.  	printf("%i\n", num);
  31.     /* Turn it back into a string */
  32.     itoa(num, str_buffer);
  33.     strcpy(unique_arr, str_buffer);
  34.     return;
  35. }
  36.  
  37. char ary[32];
  38.  
  39. int main(void) {
  40. 	ary[0] = '1';
  41. 	printf("%c\n", ary[0]);
  42. 	increment_record(ary);
  43. 	printf("%c\n", ary[0]);
  44. 	return 0;
  45. }
  46.  
Success #stdin #stdout 0s 2168KB
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https://ideone.com/EfdyYU
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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