Accumulator

10 points Easy

I'll give you a flag if you can get a negative number by adding only positive numbers.

nc rivit.dev 10009

task.tar.gz

Flag

Binary · Rivit

689 solves

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Rating 4.62

Must solve to rate

kensa

1 month ago

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include <stdlib.h>

include <stdio.h>

int main(){ setvbuf(stdout, NULL, _IONBF, 0); setvbuf(stdin, NULL, _IONBF, 0);

int acc = 0;
int n;
while (acc >= 0){
    printf("acc = %d\n", acc);
    printf("Enter a number: ");

    if (scanf("%d", &n) != 1){
        puts("Error reading integer");
    } else {
        if (n < 0){
            puts("You can't enter the negative number!");
        } else {
            acc += n;
        }
}
 // デバッグ用: 強制的にaccを負の値に設定
    if (acc >= 1000) {
        acc = -1;

    }
}

printf("You win! acc = %d\n", acc);
system("cat ./flag.txt");

}

-1

ArminVanMont

3 months ago

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Chat gpt helped me whit this

-1

blackm4c

7 months ago

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Solved without downloading the source file : )