17 Array Checksum
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include <stdio.h>
int main(){
long result = 0;
int i,c,l;
long limit = 10000007;
long values [200];
int seed = 113;
printf("Whats the lenght of array?\n");
scanf(" %d", &l);
printf("Enter the values:\n");
for (c = 0; c < l; c++)
scanf("%li", &values[c]);
for(i = 0; i < l; i++){
result = (result + values[i]) * seed;
result = result % limit;
}
printf("Answer:\n");
printf("%li", result);
return 0; }
Whats wrong with my code? Example input works perfectly, but test data returns wrong answer. I've tried reading input from a file, initializing array at the time of declaration, changing variable types.. I think its the algorithm, but can't find what's wrong with it. :(
We haven't finished with the vowel count problem yet :-)
I can see that you are trying to use long instead of int, but try running
printf("%d %d\n",sizeof(int),sizeof(long));
With modern compilers, a long and an int, both use 4 bytes. Now try
printf("%d %d %d\n",sizeof(int),sizeof(long),sizeof(long long));
You probably want to use long long which is 8 bytes. With scanf and printf try using %lld for long long.
Now it works perfectly. Thanks! :) I'll have to do some reading, I thought changing variable type from int to long would fix it..