This is my code: #include "SR04.h" #include "math.h" #define TRIG_PIN 5 #define ECHO_PIN 4 SR04 sr04 = SR04(ECHO_PIN,TRIG_PIN); long a; int hMax = 130; float seno1 = sin(18.6495); float seno2 = sin(71.3505); float vol1; float vol2; float vol1Max = 41846.112; float vol2Max = 254469.6; float volT…

vol2 = (3.1416(30*30))(a-40); //Here is the problem // ~^~ ~^~ // No operator here :roll_eyes:

ERROR! expression cannot be used as a function

chrisknightley October 1, 2021, 6:47pm 2

vol2 = (3.1416(30*30))(a-40); //Here is the problem
//           ~^~     ~^~
//        No operator here

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