int main(void)
{
int n, done, found;
for (n = 1, done = found = 0; !done; ++n) {
if (n % digsum(n) == 0) {
if (found++ < 20) printf("%d ", n);
if (n > 1000) done = printf("\n%d\n", n);
}
}
return 0;
}
int main( int argc , char* argv[]){
FILE* fin;
int y,x;
fin = fopen( argv[1], "r");
fscanf(fin, "%d" , &x);
y = digsum( x );
fclose(fin);
printf( "the digit sum is: %d\n" , y);
return 0;
}
int main(){
char* sv = malloc(UP_TO);
int s=0;
for(int i=0; i<UP_TO; i++)
sv[i] = 1;
for(int i=2; i<UP_TO; i++){
if(sv[i]==1){
if(digsum(i)==14)
s++;
for(int k=2; k<=(UP_TO/i); k++){
sv[i*k] = 0;
}
}
}
free(sv);
printf("%d\n", s);
return 0;
}
int main( int argc , char* argv[]) {
FILE* fin;
int y,x,i = 0;
fin = fopen( argv[1], "r");
while ( fscanf( fin , "%d" , &x ) != EOF ) {
i++;
y = digsum( x );
printf( "\nThe %dth digit sum is: %d\n" ,i, y);
}
fclose(fin);
return 0;
}
