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1. Top results related to c (programming language)

   • programming C language temperature conversion

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     Answered Aug 06, 2014 · 3 votes

     The %s format specifier is for null-terminated strings only (which have type char*), not single characters (char). For single characters, use %c.

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   • Programming a XM1000 Sensor Device in C Programming Language Need if statement

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     Answered Apr 25, 2016 · 0 votes

     Here's what I think it will look like, give or take a little hacking. I've structured the code as a single loop, that just polls all three sensors at 5 second intervals. So every 5 seconds, the on/off status of all three lights might change. I figure for watering a lawn, you don't really need split-second precision in terms of knowing when it got hot, or dark, or whatever.

     Based on your replies in the comments section of the OP, there might have to be some computation done involving the return values of the sensor readings. I figure it's probably easier to do the computation at compile time, so the code is biased that way.

     #include <stdio.h> /* for printf() */ -#include "contiki.h" #include "leds.h"#include "dev/light-sensor.h"#include "dev/sht11-sensor.h"-PROCESS(Led_management_process, "LED Management Process"); AUTOSTART_PROCESSES(&Led_management_process); -static struct etimer Timer; -/* Per the online docs at http://www.advanticsys.com/wiki/index.php?title=TestCM5000- T = -39.6 + 0.01 × SO(T)-So, solving for SOt gives:*/#define degreesC(n) (n)-#define TEMP_D1 degreesC(-39.6)#define TEMP_D2 degreesC(0.01)#define TEMP_THRESHOLD(tempC) (int)(((((double)(tempC))-(TEMP_D1))/(TEMP_D2)))-#define TARGET_TEMP_READING TEMP_THRESHOLD(degreesC(26))-#define LIGHT_LED LEDS_GREEN#define HUM_LED LEDS_BLUE#define TEMP_LED LEDS_RED-PROCESS_THREAD(Led_management_process, ev, data) { static int humidity_led_on = 0; static int light_led_on = 0; static int temp_led_on = 0;- PROCESS_BEGIN(); SENSORS_ACTIVATE(light_sensor); SENSORS_ACTIVATE(sht11_sensor); leds_init();- unsigned int cycle = 0;- while (1) { printf("%8u:", cycle);- /* This part is questionable, since I don't know if the sensors are guaranteed to return ints (vs. floats or something) and I don't know what units they use. */ int temp = sht11_sensor.value(SHT11_SENSOR_TEMP);- if (temp > TARGET_TEMP_READING) { printf(" TEMP warm- "); if (!temp_led_on) { printf("toggle LED"); temp_led_on = 1; leds_toggle(TEMP_LED); } else { printf("LED is ok "); } } else { printf(" TEMP cold- "); if (temp_led_on) { printf("toggle LED"); temp_led_on = 0; leds_toggle(TEMP_LED); } else { printf("LED is ok "); } }- /* Code for humidity */ /* Code for light */- printf("\n");- /* Sleep 5 seconds */ etimer_set(&Timer, CLOCK_CONF_SECOND * 5); PROCESS_WAIT_EVENT_UNTIL(ev==PROCESS_EVENT_TIMER); etimer_reset(&Timer); ++cycle; }- PROCESS_END(); } -

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   • Programming language C

     Top Answer

     Answered Feb 07, 2016 · 2 votes

     The arrays are passed by pointers (the way references are used in C). So when the data is modified in the body of the function, the calling function can access the modified data.

     After the function is executed all the variables must be lost and nothing must be saved in from array after function is executed.

     True, objects that have liftetimes within the lifetime of the function will be lost when the function exists. However the function's lifetime has no effect on objects that have existed before it or after it.

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   • C++ Programming Language

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   • C# Programming Language

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2. www.programiz.com › c-programmingLearn C Programming - Programiz: Learn to Code for Free

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   Learn C Programming. C is a powerful general-purpose programming language. It can be used to develop software like operating systems, databases, compilers, and so on. C programming is an excellent language to learn to program for beginners. Our C tutorials will guide you to learn C programming one step at a time.

3. www.geeksforgeeks.org › c-programming-languageC Tutorial - Learn C Programming Language - GeeksforGeeks

   www.geeksforgeeks.org › c-programming-language

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   Mar 11, 2024 · C is a general-purpose, procedural, high-level programming language used in the development of computer software and applications, system programming, games, and more. C language was developed by Dennis M. Ritchie at the Bell Telephone Laboratories in 1972. It is a powerful and flexible language which was first developed for the programming of ...

4. en.wikipedia.org › wiki › C_(programming_language)C (programming language) - Wikipedia

   en.wikipedia.org › wiki › C_(programming_language)

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   C Programming at Wikibooks. C ( pronounced / ˈsiː / – like the letter c) [6] is a general-purpose computer programming language. It was created in the 1970s by Dennis Ritchie, and remains very widely used and influential. By design, C's features cleanly reflect the capabilities of the targeted CPUs.

   • First appeared: 1972; 51 years ago
   • Stable release: C17, / June 2018; 5 years ago

   • Designed by: Dennis Ritchie

5. www.w3schools.com › c › indexC Tutorial - W3Schools

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   C is a general-purpose programming language, developed in 1972, and still quite popular. C is very powerful; it has been used to develop operating systems, databases, applications, etc. Start learning C now ».

   Code sample

   int main() {

     printf("Hello World!");

     return 0;

   }

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6. www.freecodecamp.org › news › what-is-the-cWhat is The C Programming Language? A Tutorial for Beginners

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   Jun 30, 2021 · In 1978 Brian Kernighan and Dennis Ritchie co-wrote and published the first edition of 'the C programming language' book, also known in the programming community as 'K&R'. For many years this text was the go-to for C language description, definition, and reference. Front page cover of the book,image source Wikipedia

7. People also ask

   What is C programming language?

   • What is C? C is a general-purpose, procedural, high-level programming language used in the development of computer software and applications, system programming, games, and more. C language was developed by Dennis M. Ritchie at the Bell Telephone Laboratories in 1972.

   C Tutorial - Learn C Programming Language - GeeksforGeeks

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   Is C a good programming language?

   • C is a general-purpose programming language, developed in 1972, and still quite popular. C is very powerful; it has been used to develop operating systems, databases, applications, etc. Our "Try it Yourself" editor makes it easy to learn C. You can edit code and view the result in your browser: printf ("Hello World!");

   C Tutorial - W3Schools

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   Who invented C programming language?

   • C language was developed by Dennis M. Ritchie at the Bell Telephone Laboratories in 1972. It is a powerful and flexible language which was first developed for the programming of the UNIX operating System. C is one of the most widely used programming languages. C programming language is known for its simplicity and efficiency.

   C Tutorial - Learn C Programming Language - GeeksforGeeks

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   What is a C programming tutorial?

   • In this C Tutorial, you’ll learn all C programming basic to advanced concepts like variables, arrays, pointers, strings, loops, etc. This C Programming Tutorial is designed for both beginners as well as experienced professionals, who’re looking to learn and enhance their knowledge of the C programming language. What is C?

   C Tutorial - Learn C Programming Language - GeeksforGeeks

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8. www.freecodecamp.org › news › the-c-programmingThe C Programming Handbook for Beginners - freeCodeCamp.org

   www.freecodecamp.org › news › the-c-programming

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   Aug 29, 2023 · C is a general-purpose and procedural programming language. A procedural language is a type of programming language that follows a step-by-step approach to solving a problem. It uses a series of instructions, otherwise known as procedures or functions, that are executed in a specific order to perform tasks and accomplish goals.

9. www.codecademy.com › learn › learn-c-introductionLearn C: Introduction | Codecademy

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   Ready to start your journey into the C programming language? C has been around for quite some time, and it is one of the foundational languages of computer science. C is everywhere; learning it will help you become a better programmer ready for the next challenge in any field of computer science!