Hi everyone, could you help me loop this function, i want it to repeate when the

Question

Hi everyone, could you help me loop this function, i want it to repeate when the user inputs Y, quit when they enter N, and give an error if they dont enter those numbers. Any help is appreciated. Using the C language.

#define _CRT_SECURE_NO_WARNINGS
#include
float a, b;
int n;
char q,t;
main() {
  
   do{
       a = ' ';
       b = ' ';
       n = ' ';
       printf("Enter the endpoints of the integral. ");
       scanf("%f", &a);
       scanf("%f", &b);
       printf("Enter the number of trapezoids you want to use. ");
       scanf("%d", &n);
       badInput();
       printf("using %i trapezoids, integral between %.5lf and %.5lf is %.5lf ", n, a, b, integrate(a, b, n));
       printf("would you like to calculate another function?");
       scanf(" %c", &q);
   } while (q == "y" || q == "Y");
   return 0;

Explanation / Answer

Hi I have added required code to validate user input.

Please let me know in case of any issue.

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
float a, b;
int n;
char q,t;
int main() {
  
do{
a = ' ';
b = ' ';
n = ' ';
printf("Enter the endpoints of the integral. ");
scanf("%f", &a);
scanf("%f", &b);
printf("Enter the number of trapezoids you want to use. ");
scanf("%d", &n);
//badInput();
printf("using %i trapezoids, integral between %.5lf and %.5lf is %.5lf ", n, a, b, integrate(a, b, n));
printf("would you like to calculate another function?");
scanf(" %c", &q);

if(q != 'n' && q != 'N' && q != 'y' && q != 'Y'){
      printf("Error: please enter Y/N ");
      while(q != 'n' && q != 'N' && q != 'y' && q != 'Y'){
          printf("would you like to calculate another function?");
          scanf(" %c", &q);
      }
}

} while (q == 'y' || q == 'Y');
return 0;
}

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