While Invalid Input Java Start Again
How to brand this program enquire for input again if invalid input is entered (in C programming)? [duplicate]
https://stackoverflow.com/questions/42464437/how-to-make-this-programme-ask-for-input-once more-if-invalid-input-is-entered-in-c-p?fbclid=IwAR1BB7wkcELX0D_GkWAOVPe7m3of-gWMo60PztXTV1YqFD6jijQy1oYkR70
Loop Infinite
#include <stdio.h> #include <ctype.h> int primary ( void ) { char ch ; float num1 , num2 , answer ; printf ( "Enter the operation of your choice:\north" ); printf ( "a. add s. decrease\n" ); printf ( "m. multiply q. carve up\n" ); printf ( "q. quit\n" ); while (( ch = getchar ())!= 'q' ) { ch = tolower ( ch ); //Ignore whitespace if ( ch == '\northward' ) continue ; else { switch ( ch ) { //Addition part case 'a' : //First number printf ( "Enter first number: " ); //Check to encounter if input is a number while ( scanf ( "%f" ,& num1 )== 0 ) { printf ( "Invalid input. Please enter a number, such equally 2.v, -1.78E8, or 3: " ); scanf ( "%*s" ); } //Second number printf ( "Enter second number: " ); while ( scanf ( "%f" ,& num2 )== 0 ) { printf ( "Invalid input. Delight enter a number, such equally 2.5, -ane.78E8, or three: " ); scanf ( "%*due south" ); } //Do math for corresponding operation reply = num1 + num2 ; //Impress out result printf ( "%.3f + %.3f = %.3f\n" , num1 , num2 , respond ); break ; //Subtraction part case 's' : printf ( "Enter offset number: " ); while ( scanf ( "%f" ,& num1 )== 0 ) { printf ( "Invalid input. Please enter a number, such as ii.5, -1.78E8, or 3: " ); scanf ( "%*southward" ); } printf ( "Enter 2nd number: " ); while ( scanf ( "%f" ,& num2 )== 0 ) { printf ( "Invalid input. Delight enter a number, such as 2.5, -1.78E8, or 3: " ); scanf ( "%*due south" ); } respond = num1 - num2 ; printf ( "%.3f - %.3f = %.3f\n" , num1 , num2 , answer ); break ; //Multiplication office case 'm' : printf ( "Enter offset number: " ); while ( scanf ( "%f" ,& num1 )== 0 ) { printf ( "Invalid input. Delight enter a number, such equally 2.5, -1.78E8, or 3: " ); scanf ( "%*s" ); } printf ( "Enter second number: " ); while ( scanf ( "%f" ,& num2 )== 0 ) { printf ( "Invalid input. Please enter a number, such as 2.v, -1.78E8, or 3: " ); scanf ( "%*s" ); } answer = num1 * num2 ; printf ( "%.3f * %.3f = %.3f\n" , num1 , num2 , answer ); break ; //Division function example 'd' : printf ( "Enter offset number: " ); while ( scanf ( "%f" ,& num1 )== 0 ) { printf ( "Invalid input. Delight enter a number, such equally ii.five, -1.78E8, or 3: " ); scanf ( "%*s" ); } printf ( "Enter second number: " ); while ( scanf ( "%f" ,& num2 )== 0 ) { printf ( "Invalid input. Please enter a number, such every bit ii.5, -1.78E8, or three: " ); scanf ( "%*south" ); } //Check for if number is a zero while ( num2 == 0 ) { printf ( "Please enter a non-zero number, such as two.5, -1.78E8, or 3: " ); while ( scanf ( "%f" ,& num2 )== 0 ) { printf ( "Invalid input. Please enter a number, such every bit 2.5, -1.78E8, or 3: " ); scanf ( "%*southward" ); } } reply = num1 / num2 ; printf ( "%.3f / %.3f = %.3f\northward" , num1 , num2 , answer ); break ; //For if a non-valid operation is entered default : printf ( "That is not a valid operation.\n" ); break ; } } printf ( "Enter the performance of your choice:\northward" ); printf ( "a. add together south. subtract\north" ); printf ( "m. multiply q. carve up\n" ); printf ( "q. quit\northward" ); } printf ( "Good day.\due north" ); render 0 ;} Pop posts from this blog
Assignment to develop a non-scientific calculator using C Language-81998
Reference For this assignment, y'all are required to develop a not-scientific calculator using C. Your calculator should only solve summation, subtraction, division, product, foursquare root and square expressions. Utilizing the math.h header for your programme, your reckoner should beginning past prompting the user to enter a 2-or-more-operand mathematical equation just like how you would using a non-scientific figurer. Your program should then display the correct answer and the user volition have the choice to either continue using the computer with the current answer to perform further calculations or end the plan. Your program should also have a assist function to display all the functions of the calculator. A sample output of the program when the user enters "help" is shown below: Your calculator must have the following additional functionalities and features: Your calculator should display values accurate upwards to 6 decimal places. For square and squar
Questions are taken from "C: How to Program" by Deitel and Deitel.
https://world wide web.eecs.wsu.edu/~cs150/tutorial/ CptS 150 Program Pattern and Development Tutorial Questions are taken from "C: How to Programme" by Deitel and Deitel. Acknowledgements I would like to thank Janet Raynor, Michelle Antolovich and Kael Rowan for their contribution to this tutorial. Without their hard work, this effort would non accept been possible. I would also like to thank the students for testing the tutorial and providing valuable feedback. -- Teck Choo Tan Introduction to C Programming Short Review Problems two.seven 2.ix 2.10 two.15 3.43 5.50d Programming Problem 2.20 TAKE THE QUIZ! Selection Short Review Problems 3.11 three.31 4.24b, iv.24e 4.30 Programming Issues iii.35 4.28 iii.20 3.23 Accept THE QUIZ! Loops Short Review Problems iii.10 4.5 4.6b Programming Problems 3.17 three.47b 4.10 4.12 4.xviii TAKE THE QUIZ! Functions Short Review Problems 5.seven 5.viii five.13 v.50 Programming Proble
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