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47 lines
560 B
47 lines
560 B
#include <stdio.h>
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#include <limits.h>
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int getNumber(void);
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int main(void) {
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int count = 0;
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int sum = 0;
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int end = getNumber();
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if (end >= 0) {
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while (count++ < end) {
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if ((INT_MAX - sum) < count) {
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printf("Integer overflow\n");
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return 1;
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} else {
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sum = sum + count;
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}
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}
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printf("sum = %d\n", sum);
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}
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return 0;
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}
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int getNumber(void) {
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int number;
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printf("How far should we add: ");
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if (!scanf("%d", &number) || number < 0) {
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number = -1;
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}
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return number;
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}
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