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:




:

































 

 

 

 


3. .




/*average.c*/main() { float number_1, number_2, number_3, average; printf(" : "); scanf("%f", &number_1); printf(" : "); scanf("%f", &number_2); printf(" : "); scanf("%f", &number_3); average = number_1 + number_2 + number_3 / 3; printf(" %f", average); }

average = number_1 + number_2 + number_3 / 3;

, :

  1. number_3 3.
  2. number_1 number_2 .

100, 233.33. :

average = (number_1 + number_2 + number_3) / 3;

. , , , . , , 3 (.7). .


.7.


.8.

, (.8). .

. , , 40- . , 40 , , 40 , :

40 * rate /* */hours 40 /* */rate * 2 /* */

rate 1 , hours . , . , :

total = 40 * rate + hours - 40 * rate * 2

, 48 , 10 . :

40 * rate  
40 * rate  
400 * 2  
400 + 48  
448 800 352

, 352 . , : total = (40 * rate) +((hours - 40) * (rate * 2)) ( 4). , . , . . :

40 * rate  
hours 40  
rate * 2  
8 * 20  
400 + 160  




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