# i can't seem to find the right algorithm...

 pedro gutierrez · November 26, 2014 Here's a program i'm trying to make.The idea is to evaluate if a bank transaction is suspicious or not.For that i'll have to make a program that receives different transactions (different numbers) and if any of those transaction is greater that the average (of absolute values) times a number x then the account would be classified as suspicious.The input will be a txt document in which i would have a real number (that needs to be possitive) and then a list of integers ending with the number 0 and then I would have to print a few things in a certain way (you can understand that from the code i wrote...). Here's the code:#include #include int main(){    double x;    printf("Enter a positive number:\n");    scanf("%lf", &x);    while (x<=0){        printf("Invalid number. Please enter again:\n");        scanf("%lf", &x);    }    int i, y, balance=0;    double sum = 0, average;    for (i=0; y !=0; i++){        scanf("%d", &y);        balance += y;        if (y<0){            y = -y;        }        sum +=y;    }    average =sum/(i-1);    printf("Account balance: %d \n", balance);    printf("Average amount: %.2f \n", average);    if ((y/average) > x) {        printf("Suspicious account!\n");    }    else {        printf("No suspicious activity detected.\n");    }    return 0;}My problem arises at the if statement at the end of the code.I'm supposed to evaluate that inside the for loop because I need every value of y but I also need the value of "average" which I can only get to it after the for loop because i need to reach the last possible value for "y", so it looks that i'm in a bit of a problem...Thanks in advance for your help :-)

## Replies

 pedro gutierrez · November 27, 2014 I'm using redirection to read the file of input, and I can't know in advance what the average will be. I mean, I need to caclulate the average and only then use it in the code.I'm talking about a homework I need to do and I cana only use the input data once, just as it is written in the txt file (a line of a few numbers ending in a 0 to end the search).Do you have any other idea?
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