如何在一个特定的号码增加的数字,例如,如果数量为3234的结果应该是3 + 2 + 3 + 4 = 12
How do I add the digits in a particular number for example if the number is 3234 the result should be 3+2+3+4 = 12?
沿此线的东西应该这样做:
Something along the lines of this should do it:
int val = 3234;
int sum = 0;
while (val != 0) {
sum += (val % 10);
val = val / 10;
}
// Now use sum.
有关持续增加,直到你得到一个数字:
For continued adding until you get a single digit:
int val = 3234;
int sum = val;
while (sum > 9) {
val = sum;
sum = 0;
while (val != 0) {
sum += (val % 10);
val = val / 10;
}
}
// Now use sum.
请注意,这两种会破坏原来的 VAL
值。如果你想preserve它,你应该做一个副本或做这一个功能,所以原来保持不变。
Note that both of these are destructive to the original val
value. If you want to preserve it, you should make a copy or do this in a function so the original is kept.