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bacon · 09-14-2004, 05:33 PM

I swear, you guys are making this way too hard.

Code:

int main()
{

        char *strBignum = "790278573\0";
        int i,sum=0;
        for(i=0; i<strlen(strBignum); i++) {
                sum += (int)(strBignum[i]-'0');
        }
        cout << "The sum is: " << sum <<endl;

}

The only trick is the ascii math. Just subtract the ascii value of '0' from the char, and cast it to an int.

09-14-2004, 05:33 PM	#5 (permalink)
bacon Upright	I swear, you guys are making this way too hard. Code: int main() { char *strBignum = "790278573\0"; int i,sum=0; for(i=0; i<strlen(strBignum); i++) { sum += (int)(strBignum[i]-'0'); } cout << "The sum is: " << sum <<endl; } The only trick is the ascii math. Just subtract the ascii value of '0' from the char, and cast it to an int.