Program is terminating without recognizing scanf - c

Question

I don't know why my program terminates before confirmStats(); is called. I included everything related in main() in case the issue is ocurring somewhere else in my program.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int str, intel, charis;
int totalPts =5;
/* Returns a number.
User must input an integer.
*/
int getNumber(int number){
while(scanf("%d", &number) != 1){
printf("You did not enter a valid number\n");
scanf("%*s");
}
return number;
}
/* Individual stat points */
int stat(int number){
number = getNumber(number);
while(number > totalPts){
printf("You only have %d stat points left\n", totalPts);
printf("Enter a number less than or equal to %d:\t", totalPts);
number = getNumber(number);
}
totalPts -= number;
printf("Points remaining:\t%d\n", totalPts);
return number;
}
/* Player stat points */
void getStats(){
printf("You're alotted %d stat points to spend in Strength, Intellect, and Charisma\n", totalPts);
printf("Intellect:\t");
intel = stat(intel);
printf("Strength:\t");
str = stat(str);
printf("Charisma:\t");
charis = stat(charis);
printf("\nIntellect: %d\t Strength: %d\t Charisma: %d\n", intel, str, charis);
}
void confirmStats(){
char ans;
scanf("%c", &ans);
while(ans == 'n'){
str = 0;
intel = 0;
charis = 0;
getStats();
printf("Are these correct?:\ty/n: ");
scanf("%c", &ans);
}
}
void main(){
printf("\nSafe choice...");
printf("\n");
printf("Alright, how old are you?\n");
// int age, str, intel, charis;
int age;
// int totalPts = 5;
age = getNumber(age);
getStats();
printf("Are these correct? ");
printf("\n");
printf("y/n:\t");
printf("\n");
confirmStats();
}

Answer 1

The problem is that scanf("%c", &ans); scans the newline character left over by the previous scanf.
The fix is easy. Simply add a space before %c in the two scanfs in confirmStats. The space is a whitespace character and a whitespace character in the format string of scanf tells scanf to scan any number of whitespace characters, if any, until the first non-whitespace character.
Improved code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int str, intel, charis;
int totalPts = 5;
/*
Returns a number.
User must input an integer.
*/
int getNumber(){
int number;
while(scanf("%d", &number) != 1){
printf("You did not enter a valid number\n");
scanf("%*s");
}
return number;
}
/* Individual stat points */
int stat(){
int number;
number = getNumber();
while(number > totalPts){
printf("You only have %d stat points left\n", totalPts);
printf("Enter a number less than or equal to %d:\t", totalPts);
number = getNumber();
}
totalPts -= number;
printf("Points remaining:\t%d\n", totalPts);
return number;
}
/* Player stat points */
void getStats(){
printf("You're alotted %d stat points to spend in Strength, Intellect, and Charisma\n", totalPts);
printf("Intellect:\t");
intel = stat();
printf("Strength:\t");
str = stat();
printf("Charisma:\t");
charis = stat();
printf("\nIntellect: %d\t Strength: %d\t Charisma: %d\n", intel, str, charis);
}
void confirmStats(){
char ans;
scanf(" %c", &ans);
while(ans == 'n'){
str = 0;
intel = 0;
charis = 0;
getStats();
printf("Are these correct?:\ty/n: ");
scanf(" %c", &ans);
}
}
int main(void){
printf("\nSafe choice...");
printf("\n");
printf("Alright, how old are you?\n");
age = getNumber();
getStats();
printf("Are these correct? ");
printf("\n");
printf("y/n:\t");
printf("\n");
confirmStats();
return 0;
}

Answer 2

int getNumber(int number){
int ok = 0;
while (!ok){
if(scanf("%d", &number) != 1){
printf("You did not enter a valid number\n");
while(getchar()!='\n');
}
else {
getchar();
ok=1;
}
}
return number;
}

Answer 3

Sir ,do u have checked the syntax is scant("%d",&variable);
Not. scant("%d",variable);