Šajā tēmā mēs apspriedīsim, kā mēs rakstām kalkulatora programmu C programmēšanas valodā. Kalkulators ir neliela elektroniska ierīce, ko izmanto, lai veiktu dažādas aritmētiskas darbības, piemēram, saskaitīšanu, atņemšanu, reizināšanu, dalīšanu, procentuālo daudzumu utt. Tas atvieglo un paātrina aprēķinus. Tā ir pārnēsājama ierīce, ko var izmantot jebkur, lai veiktu vienkāršas matemātiskas darbības. Mēs izmantojam zinātnisku vai sarežģītu kalkulatoru dažās situācijās, kad mums ir jāatrisina sarežģīti aprēķini, piemēram, trigonometrijas funkcijas, eksponenciālie operatori, grādi, radiāni, log funkcijas, hiperboliskās funkcijas utt. Apspriedīsim dažādus veidus, kā izveidot kalkulatora programmu C valodā. .
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Kalkulatora programmas algoritms
1. darbība: Deklarē lokālos mainīgos n1, n2, res, opt. Piemēram, ja n1 un n2 ņem divas skaitliskās vērtības, res saglabās rezultātus un optiskais mainīgais definēs operatora simbolus.
2. darbība: Izdrukājiet izvēli (saskaitīšana, atņemšana, reizināšana, dalīšana utt.
3. darbība: Ievadiet izvēli
4. darbība: Ir divi skaitļi, n1 un n2
5. darbība: Pārslēgt reģistru uz lietotāja izvēlētu operatoru
6. darbība: Saglabājiet rezultātu mainīgajā res.
7. darbība: Parādiet operācijas rezultātu
8. darbība: Iziet no programmas.
Dažādi veidi, kā izveidot kalkulatora programmu programmā C
Tālāk ir norādīti dažādi veidi, kā rakstīt kalkulatora programmu C valodā.
- Kalkulatora programma C valodā, izmantojot slēdzi
- Kalkulatora programma C valodā, izmantojot if else if paziņojumu
- Kalkulatora programma C valodā, izmantojot do-while cilpu un slēdža paziņojumu
- Kalkulatora programma C valodā, izmantojot funkciju un slēdža paziņojumu
1. piemērs. Kalkulatora programma C valodā, izmantojot slēdža paziņojumu
Uzrakstīsim programmu kalkulatora programmas izveidei, izmantojot slēdža paziņojumu
programma.c
#include int main() { // declare local variables char opt; int n1, n2; float res; printf (' Choose an operator(+, -, *, /) to perform the operation in C Calculator
'); scanf ('%c', &opt); // take an operator if (opt == '/' ) { printf (' You have selected: Division'); } else if (opt == '*') { printf (' You have selected: Multiplication'); } else if (opt == '-') { printf (' You have selected: Subtraction'); } else if (opt == '+') { printf (' You have selected: Addition'); } printf ('
Enter the first number: '); scanf(' %d', &n1); // take fist number printf (' Enter the second number: '); scanf (' %d', &n2); // take second number switch(opt) { case '+': res = n1 + n2; // add two numbers printf (' Addition of %d and %d is: %.2f', n1, n2, res); break; case '-': res = n1 - n2; // subtract two numbers printf (' Subtraction of %d and %d is: %.2f', n1, n2, res); break; case '*': res = n1 * n2; // multiply two numbers printf (' Multiplication of %d and %d is: %.2f', n1, n2, res); break; case '/': if (n2 == 0) // if n2 == 0, take another number { printf ('
Divisor cannot be zero. Please enter another value '); scanf ('%d', &n2); } res = n1 / n2; // divide two numbers printf (' Division of %d and %d is: %.2f', n1, n2, res); break; default: /* use default to print default message if any condition is not satisfied */ printf (' Something is wrong!! Please check the options '); } return 0; } Izvade:
2. piemērs. Kalkulatora programma C, izmantojot if else if paziņojumu
Apskatīsim piemēru vienkāršas kalkulatora programmas rakstīšanai C valodā, izmantojot if else if paziņojumu.
programma2.c
#include int main() { // declare local variables char opt; int n1, n2; float res; printf (' Select an operator (+, -, *, /) to perform an operation in C calculator
'); scanf ('%c', &opt); // take an operator printf (' Enter the first number: '); scanf(' %d', &n1); // take fist number printf (' Enter the second number: '); scanf (' %d', &n2); // take second number if (opt == '+') { res = n1 + n2; // add two numbers printf (' Addition of %d and %d is: %f', n1, n2, res); } else if (opt == '-') { res = n1 - n2; // subtract two numbers printf (' Subtraction of %d and %d is: %f', n1, n2, res); } else if (opt == '*') { res = n1 * n2; // multiply two numbers printf (' Multiplication of %d and %d is: %f', n1, n2, res); } else if (opt == '/') { if (n2 == 0) // if n2 == 0, take another number { printf ('
Divisor cannot be zero. Please enter another value '); scanf ('%d', &n2); } res = n1 / n2; // divide two numbers printf (' Division of %d and %d is: %.2f', n1, n2, res); } else { printf('
You have entered wrong inputs '); } return 0; } Izvade:
3. piemērs. Kalkulatora programma C, izmantojot do while cilpas un slēdža priekšrakstu
Izveidosim programmu Kalkulators, izmantojot do while cilpu un pārslēgšanas reģistru C valodā
programma3.c
#include #include #include int main() { // declaration of local variable op; int op, n1, n2; float res; char ch; do { // displays the multiple operations of the C Calculator printf (' Select an operation to perform the calculation in C Calculator: '); printf ('
1 Addition 2 Subtraction
3 Multiplication 4 Division
5 Square 6 Square Root
7 Exit
Please, Make a choice '); scanf ('%d', &op); // accepts a numeric input to choose the operation // use switch statement to call an operation switch (op) { case 1: // Add two numbers printf (' You chose: Addition'); printf ('
Enter First Number: '); scanf (' %d', &n1); printf (' Enter Second Number: '); scanf (' %d', &n2); res = n1 + n2; // Add two numbers printf (' Addition of two numbers is: %.2f', res); break; // break the function case 2: // Subtract two numbers printf (' You chose: Subtraction'); printf ('
Enter First Number: '); scanf (' %d', &n1); printf (' Enter Second Number: '); scanf (' %d', &n2); res = n1 - n2; // subtract two numbers printf (' Subtraction of two numbers is: %.2f', res); break; // break the function case 3: // Multiplication of the numbers printf (' You chose: Multiplication'); printf ('
Enter First Number: '); scanf (' %d', &n1); printf (' Enter Second Number: '); scanf (' %d', &n2); res = n1 * n2; // multiply two numbers printf (' Multiplication of two numbers is: %.2f', res); break; // break the function case 4: // Division of the numbers printf (' You chose: Division'); printf ('
Enter First Number: '); scanf (' %d', &n1); printf (' Enter Second Number: '); scanf (' %d', &n2); if (n2 == 0) { printf ('
Divisor cannot be zero. Please enter another value '); scanf ('%d', &n2); } res = n1 / n2; // divide two numbers printf (' Division of two numbers is: %.2f', res); break; // break the function case 5: // getting square of a number printf (' You chose: Square'); printf ('
Enter First Number: '); scanf (' %d', &n1); res = n1 * n1; // get square of a number printf (' Square of %d number is: %.2f', n1, res); break; // break the function case 6: // getting the square root of the number printf (' You chose: Square Root'); printf ('
Enter First Number: '); scanf (' %d', &n1); res = sqrt(n1); // use sqrt() function to find the Square Root printf (' Square Root of %d numbers is: %.2f', n1, res); break; // break the function case 7: printf (' You chose: Exit'); exit(0); break; // break the function default: printf(' Something is wrong!! '); break; } printf ('
**********************************************
'); } while (op != 7); return 0; } Izvade:
4. piemērs. Kalkulatora programma C, izmantojot funkciju un slēdža paziņojumu
Izveidosim programmu Kalkulators, izmantojot funkciju un pārslēgt reģistru C valodā
programma4.c
#include #include #include #include // function declarations int addition(); int subtract(); int multiply(); int divide(); int sq(); int sqrt1(); void exit(); int main() { // declaration a local variable op; int op; do { // displays the multiple operations of the C Calculator printf (' Select an operation to perform the calculation in C Calculator: '); printf ('
1 Addition 2 Subtraction
3 Multiplication 4 Division
5 Square 6 Square Root
7 Exit
Please, Make a choice '); scanf ('%d', &op); // accepts a numeric input to choose the operation // use switch statement to call an operation switch (op) { case 1: addition(); /* It call the addition() function to add the given numbers */ break; // break the function case 2: subtract(); /* It call the subtract() function to subtract the given numbers */ break; // break the function case 3: multiply(); /* It call the multiply() function to multiply the given numbers */ break; // break the function case 4: divide(); // It call the divide() function to divide the given numbers break; // break the function case 5: sq(); // It call the sq() function to get the square of given numbers break; // break the function case 6: sqrt1(); /* It call the sqrt1() function to get the square root of given numbers */ break; // break the function case 7: exit(0); // It call the exit() function to exit from the program break; // break the function default: printf(' Something is wrong!! '); break; } printf ('
**********************************************
'); } while (op != 7); return 0; } // function definition int addition() { int i, sum = 0, num, f_num; // declare a local variable printf (' How many numbers you want to add: '); scanf ('%d', &num); printf (' Enter the numbers:
'); for (i = 1; i <= num; i++) { scanf(' %d', &f_num); sum="sum" + f_num; } printf (' total of the numbers="%d'," sum); return 0; use subtract() function to subtract two int n1, n2, res; first number is: '); scanf &n1); second &n2); res="n1" - n2; subtraction %d res); multiply() multiply * divide() divide if (n2="=" 0)
divisor cannot be zero. please enter another value ('%d', division sq() get square given a square: n1; sqrt1() root float root: %f', < pre> <p> <strong>Output:</strong> </p> <img src="//techcodeview.com/img/c-tutorial/61/calculator-program-c-5.webp" alt="Calculator Program in C"> <hr></=>