HI, I'm a complete putz with C programming but can someone show me how to get this to work. I'm simply trying to get three integers into a string called reading. int a0 = 124; int a1 = 2315; int a2 = 567; String reading = ""; reading = itoa(a0) + itoa(a1) + itoa(a2); as you can see I'm t…

String reading = String(a0) + String(a1) + String(a2);

Probably worth noting that there are 2 types of "strings" in Arduinoland. One is the "String" (upper case S) class.. as you have declared in your example... it has some very useful methods that are quite easy to use, especially for a beginner. However, if not used carefully it can also cause memor…

[image] red_car: quite easy to use, especially for a beginner. However, if not used carefully [...] This is the biggest problem with String. How can a beginner, for whom c-strings are allegedly too hard to understand (??), be expected to be careful about String's memory issues? Wouldn't it be…

[image] dazza000: HI, I'm a complete putz with C programming but can someone show me how to get this to work. I'm simply trying to get three integers into a string called reading. int a0 = 124; int a1 = 2315; int a2 = 567; String reading = ""; reading = itoa(a0) + itoa(a1) + itoa(a2);…

that only works if a0, a1, a2 have 3,4,3 digits respectively... and aren't negative... so not very flexible.

Given that the OP apparently intends to concatenate the numbers (as strings of ASCII digits) without inserting any spaces or punctuation to indicate where one number ends and the next begins, I assume that s/he knows how many digits each number contains.

consider code below producing following output a0 124, a1 2315, a2 567 void setup () { Serial.begin (9600); int a0 = 124; int a1 = 2315; int a2 = 567; char s [40]; sprintf (s, " a0 %d, a1 %d, a2 %d", a0, a1, a2); Serial.println (s); } // ----------------------------…

Help with int to string

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paulpaulson November 24, 2021, 6:54am 2

Hello
Take a search engine on your choise and ask the WWW:
Concatenate strings in Arduino

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Help with int to string

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