31 lines
587 B
C
31 lines
587 B
C
|
#include <stdio.h>
|
||
|
|
int main() {
|
||
|
|
int a, digits = 0, b = 0;
|
||
|
|
printf("input a number for calculation\n");
|
||
|
|
fflush(stdin);
|
||
|
|
scanf("%d",&a);
|
||
|
|
|
||
|
|
int digit[128];
|
||
|
|
|
||
|
|
// look out for wrong order
|
||
|
|
for(int i=0; i<128; i++) {
|
||
|
|
digit[i] = a % 10;
|
||
|
|
if(a>0)
|
||
|
|
a = a / 10;
|
||
|
|
else {
|
||
|
|
if(digits==-1)
|
||
|
|
digits = i;
|
||
|
|
digit[i] = -1;
|
||
|
|
}
|
||
|
|
//printf("%d. digit is: %d\n", i, digit[i]);
|
||
|
|
}
|
||
|
|
|
||
|
|
// array is in wrong order, but who cares for the quersumme
|
||
|
|
for(int i=0; i<128; i++){
|
||
|
|
if(digit[i]>0)
|
||
|
|
b += digit[i];
|
||
|
|
}
|
||
|
|
printf("quersumme is: %d\n", b);
|
||
|
|
return 0;
|
||
|
|
}
|