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137 lines
2.8 KiB
C
137 lines
2.8 KiB
C
/* Calculator - Write a complete C program to simulate the 4 - function calculator. The functions are +,-,*,/ and Q to quit. The program must be menu driven*/
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#include <stdio.h>
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#include <conio.h>
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void addition(float a, float b);
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void subtraction(float a, float b);
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void multiplication(float a, float b);
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void division(float a, float b);
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void main()
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{
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char choice ;
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float a,b ;
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clrscr() ;
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do
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{
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printf("\n Menu: \n") ;
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printf("+ : Addition \n") ;
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printf("- : Subtraction \n") ;
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printf("* : Multiplication \n") ;
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printf("/ : Division \n") ;
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printf("Q : Quit \n") ;
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printf("Enter your choice: ") ;
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scanf(" %c", &choice) ;
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if(choice=='+' || choice=='-' || choice=='*' || choice=='/')
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{
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printf("Enter 2 numbers: ") ;
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scanf("%f %f", &a, &b);
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}
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switch(choice)
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{
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case '+' :
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addition(a,b);
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break;
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case '-' :
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subtraction(a,b);
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break;
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case '*' :
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multiplication(a,b);
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break;
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case '/' :
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division(a,b);
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break;
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case 'q' :
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break;
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case 'Q' :
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break;
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default :
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printf("Invalid Choice. Enter again.\n");
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}
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}
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while(choice!='q' && choice!='Q');
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getch() ;
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}
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void addition(float a, float b)
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{
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printf("Sum of two numbers is: %f \n", a+b) ;
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}
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void subtraction(float a, float b)
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{
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printf("Diffrence of two numbers is: %f \n", a-b) ;
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}
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void multiplication(float a, float b)
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{
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printf("Product of two numbers is: %f \n", a*b) ;
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}
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void division(float a, float b)
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{
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printf("Result of division is: %f \n", a/b) ;
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}
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/*
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Output:
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Menu:
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+ : Addition
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- : Subtraction
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* : Multiplication
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/ : Division
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Q : Quit
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Enter your choice: +
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Enter 2 numbers: 2 5
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Sum of two numbers is: 7.000000
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Menu:
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+ : Addition
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- : Subtraction
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* : Multiplication
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/ : Division
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Q : Quit
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Enter your choice: -
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Enter 2 numbers: 2 5
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Diffrence of two numbers is: -3.000000
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Menu:
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+ : Addition
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- : Subtraction
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* : Multiplication
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/ : Division
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Q : Quit
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Enter your choice: *
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Enter 2 numbers: 2 5
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Product of two numbers is: 10.000000
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Menu:
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+ : Addition
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- : Subtraction
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* : Multiplication
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/ : Division
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Q : Quit
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Enter your choice: /
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Enter 2 numbers: 2 5
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Result of division is: 0.400000
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Menu:
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+ : Addition
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- : Subtraction
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* : Multiplication
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/ : Division
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Q : Quit
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Enter your choice: %
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Invalid Choice. Enter again.
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Menu:
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+ : Addition
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- : Subtraction
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* : Multiplication
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/ : Division
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Q : Quit
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Enter your choice: Q
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*/ |