You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
47 lines
603 B
47 lines
603 B
#include <stdio.h>
|
|
#include <limits.h>
|
|
|
|
|
|
|
|
int getNumber(void);
|
|
|
|
|
|
int main(void) {
|
|
|
|
int count = 0;
|
|
int sum = 0;
|
|
int end = getNumber();
|
|
|
|
if (end >= 0) {
|
|
|
|
while (count++ < end) {
|
|
if (INT_MAX / count < count || (INT_MAX - sum) < count * count) {
|
|
printf("Integer overflow\n");
|
|
return 1;
|
|
} else {
|
|
sum = sum + count * count;
|
|
}
|
|
}
|
|
|
|
printf("sum = %d\n", sum);
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
int getNumber(void) {
|
|
|
|
int number;
|
|
|
|
printf("How far should we add: ");
|
|
|
|
if (!scanf("%d", &number) || number < 0) {
|
|
number = -1;
|
|
}
|
|
|
|
return number;
|
|
|
|
}
|