#include #include #include int main(void) { int state = 1; char input; while (state != 4) { switch (state) { } case 1: printf("Enter credit card: "); scanf("%c", &input); if (input == = '1') state = 2; else state = 3; break; case 2: printf("If credit card is valid, record credit card number and time.\n"); state = 4; break; case 3: printf("If credit card is invalid, display error message.\n"); state = 1; break; printf("Exit parking garage.\n"); printf("Calculate charge based on credit card number and time.\n"); return 0;

#include #include #include int main(void) { int state = 1; char input; while (state != 4) { switch (state) { } case 1: printf("Enter credit card: "); scanf("%c", &input); if (input == = '1') state = 2; else state = 3; break; case 2: printf("If credit card is valid, record credit card number and time.\n"); state = 4; break; case 3: printf("If credit card is invalid, display error message.\n"); state = 1; break; printf("Exit parking garage.\n"); printf("Calculate charge based on credit card number and time.\n"); return 0;

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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#include<stdio.h>#include<stdlib.h> int cent50=0;int cent20=0;int cent10=0;int cent05=0; void calculatechange(int* change){if(*change>0){if(*change>=50){*change-=50;cent50++;}else if(*change>=20){*change-=20;cent20++;}else if(*change>=10){*change-=10;cent10++;}else if(*change>=05){*change-=05;cent05++;}calculatechange(change);}}void printchange(){if(cent50)printf("\n50cents:%d coins",cent50);if(cent20)printf("\n20cents:%d coins",cent20);if(cent10)printf("\n10cents:%d coins",cent10);if(cent05)printf("\n05cents:%d coins",cent05);cent50=0;cent20=0;cent10=0;cent05=0;}void takechange(int* change){scanf("%d",change);getchar();}int main(){int change=0;int firstinput=0;while(1){if(!firstinput){printf("\nEnter the amount:");firstinput++;}else{printf("\n\nEnter the amount to continue or Enter -1 to…