#include <stdio.h>
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#include <limits.h>
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#define SEC_PER_YEAR 3.156e7
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int main (void) {
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unsigned age;
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printf("Enter your age: ");
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scanf("%u", &age);
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if ((unsigned int)(UINT_MAX / SEC_PER_YEAR) < age) {
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printf("Integer overflow\n");
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return 1;
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} else {
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printf("You are %u seconds old\n", (unsigned int)(age * SEC_PER_YEAR));
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return 0;
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}
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}
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