printf("%s", name);Why do some functions return to main() with a newline, even though I am using getchar() to get rid of it?
Is there perhaps some other, better way to do it? Perhaps one with which clang doesn’t give me “unused result” warnings?
MODS: If you deem it inappropirate for me to continuously ask for guidance here, please let me know. 😊
#include <stdio.h>
void executechoice(int choice);
void printsavedpins(int pin_storage[]);
void promptnewpin(void);
void checkpinlength(int pin);
void checkpinmatch(int pin);
void updatepinstorage(int pin);
int pin = 0;
int pin_storage[10] = {0};
int storage_index = 0;
const int storage_limit = 10;
//Prompt user for action.
int main() {
int choice = 0;
printf("What would you like to do? (V)iew your saved pins, (S)ave a new pin or (E)xit? ");
while ((choice = getchar()) != EOF) {
getchar(); //clang gives 'unused result' warning but '\n' needs to be removed.
if (choice == 'E' || choice == 'e') { break; }
else {
executechoice(choice);
getchar(); //clang gives 'unused result' warning but '\n' needs to be removed.
printf("What would you like to do next? (V)iew your saved pins, (S)ave a new pin or (E)xit? ");
}
}
printf("Goodbye!\n");
return 0;
}
//Function definitions
void executechoice(int choice) {
if (choice == 'V' || choice == 'v') { printsavedpins(pin_storage); }
else if (choice == 'S' || choice == 's') { promptnewpin(); }
else { printf("Invalid choice! What would you like to do? (V)iew your saved pins, (S)ave a new pin or (E)xit? "); }
}
void printsavedpins(int pin_storage[]) {
for (int i = 0; i < storage_limit; i++) printf("Pin %d: %d\n", i + 1, pin_storage[i]);
}
void promptnewpin(void) {
printf("Enter new pin: ");
scanf("%d", &pin);
checkpinlength(pin);
}
void checkpinlength(int pin) {
if (pin < 1000*100) {
printf("Pin has to be at least six digits!\n");
promptnewpin();
}
else checkpinmatch(pin);
}
void checkpinmatch(int pin) {
int check = 0;
printf("Verify your new pin: ");
scanf("%d", &check);
if (check != pin) {
printf("Mismatch! ");
promptnewpin();
}
else updatepinstorage(pin);
}
void updatepinstorage(int pin) {
pin_storage[storage_index] = pin;
storage_index++;
if (storage_index >= storage_limit) { storage_index = 0; }
printf("New pin saved successfully!\n");
}
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