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  1. #include<stdio.h>
  2. #include<stdint.h>
  3. #include<string.h>
  4.  
  5. #define AER_REQ_RESPONSE_READY 0
  6.  
  7. uint8_t currentZoom = 0;
  8.  
  9. void zoomToPercentage(uint8_t percentage) {
  10.     printf("Zoom to %d\n", percentage);
  11.     currentZoom = percentage;
  12. }
  13.  
  14. int nextZoom(int8_t plusZoomPercentage) {
  15.     //if (!unabto_query_read_int8(readBuffer, &plusZoomPercentage))
  16.     //{
  17.     //        return AER_REQ_TOO_SMALL;
  18.     //}
  19.     if (plusZoomPercentage != 0)
  20.     {
  21.         uint8_t currentZoomPercentage = currentZoom;
  22.         if (plusZoomPercentage < - currentZoomPercentage) {
  23.         	plusZoomPercentage = - currentZoomPercentage;
  24.         }
  25.         if (plusZoomPercentage > 100 - currentZoomPercentage) {
  26.         	plusZoomPercentage = 100 - currentZoomPercentage;
  27.         }
  28.         zoomToPercentage(currentZoomPercentage + plusZoomPercentage);
  29.     }
  30.     return AER_REQ_RESPONSE_READY;
  31. }
  32.  
  33.  
  34. int main()
  35. {
  36.     nextZoom(50);
  37.     nextZoom(50);
  38.     nextZoom(50);
  39.     nextZoom(-120);
  40. }
  41.  
Success #stdin #stdout 0s 2008KB
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stdin
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Standard input is empty
stdout
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Zoom to 50
Zoom to 100
Zoom to 100
Zoom to 0
https://ideone.com/0gMB0r
language:
C99 (gcc 8.3)
created:
10 years ago
visibility:
public

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