Security Study/System
integer overflow
๐๐พ๐ฌ๐ฎ๐ฝ๐ฎ_๐ข๐ฝ๐ฎ๐ต๐ต๐ช
2015. 10. 22. 17:44
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#include <stdio.h>
int main()
{
int a,b;
printf("a + b = 0 (a,b != 0)\n");
printf("A = ");
scanf("%d",&a);
printf("B = ");
scanf("%d",&b);
if(a + b == 0) {
printf("Congratulation!\n");
}
else if(a == 0 || b ==0) {
printf("Fuck up!\n");
}
else {
printf("Fuck you!\n");
}
return 0;
}
integer overflow๋?
๊ธฐ๋ณธ ์ ์ํ์์ ์ ์ฅํ ์ ์๋ ๊ธฐ๋ณธ์น์ ๊ฐ๋ณด๋ค ๋ ํฐ ์๋ฅผ ์ ๋ ฅํ์ฌ ์๊ธฐ์น ์์ ํ๋์ ์ทจํ๊ฒ ํ๋ ๊ฒ
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