int main(int argc, const char * argv[])
{
int n, sum;
for (n=2992; n<10000; ++n) {
sum = digitsum(n, 10);
if (sum==digitsum(n, 12) && sum==digitsum(n, 16)) {
printf("%i\n", n);
}
}
return 0;
}
int main( int argc, char *argv[] ){
int sum, digit;
FILE *fin;
fin = fopen( argv[1], "r" );
while( fscanf( fin, "%d", &digit ) != EOF ){
sum = 0;
sum = digitsum( digit, sum );
printf( "%d ", sum );
}
printf( "\n" );
fclose( fin );
return 0;
}
// EuroTest
t_errcode eurotest (const char * str)
{
// error auf ok setzen
t_errcode err;
// string länge
size_t ln = strlen(str);
// testen
if (ln < 12)
err = ec_zukurz;
else if (ln > 12)
err = ec_zulang;
else if (!isupper(str[0]))
err = ec_LCfalsch;
else if (!isdstr(&str[1]))
err = ec_SNkeineZiffer;
else if (digitsum(str) % 9 != 0)
err = ec_pz_falsch;
else
err = ec_ok;
return err;
}
void eu065(char *ans) {
int N = 99;
mpz_t n, d, r;
mpz_init(n);
mpz_init(d);
mpz_init(r);
mpz_set_ui(n, eterm(N));
mpz_set_ui(d, 1);
for (int i = N-1; i >= 0; i--) {
mpz_swap(n, d);
int t = eterm(i);
mpz_addmul_ui(n, d, t);
mpz_gcd(r, n, d);
mpz_div(n, n, r);
mpz_div(d, d, r);
}
sprintf(ans, "%d", digitsum(n));
mpz_clear(r);
mpz_clear(d);
mpz_clear(n);
}
int main( int argc, char *argv[] ) {
FILE *fin;
int num;
int sumnum;
fin = fopen( argv[1], "r" );
while( fscanf( fin, "%d", &num ) != EOF ) {
printf( "Integer Read: %d\n", num );
sumnum = digitsum( num );
printf( "The sum of digits is: %d\n\n", sumnum );
}
fclose( fin );
return 0;
}
int main ( int argc, char *argv[] ) {
int x ;
FILE *fin = fopen ( argv[1], "r" ) ;
printf ( "\n" ) ;
while ( fscanf ( fin, "%d", &x ) != EOF )
printf ( "%d", digitsum (x) ) ;
fclose ( fin ) ;
printf ( "\n\n" ) ;
return 0 ;
}
int main (int argc, char*argv[]){
int x=0;
FILE*fin;
fin=fopen( argv [1], "r");
while((fscanf(fin,"%d",&x)) != EOF){
printf("%d\n", digitsum(x));
}
fclose (fin);
return 0;
}
int main( int argc, char *argv[] ){
int nextint;
FILE *fin;
fin = fopen( argv[ 1 ], "r" );
while( fscanf( fin, "%d", &nextint ) != EOF ) {
printf( "sum: %d ", digitsum( nextint ) );
}
printf( "\n" );
fclose( fin );
return 0;
}
int main( int argc, char *argv[] ){
FILE *fin;
fin = fopen( argv[ 1 ], "r" );
while( fscanf( fin, "%d", &nextint ) != EOF ) {
printf( "%d ", digitsum( nextint ) );
sum = 0; /* reset sum for each next integer that is read in */
}
printf( "\n" );
fclose( fin );
return 0;
}
int main()
{
char result[MAX_DIGITS];
int base, power;
base = 2;
power = 1000;
powstr(base, power, result, MAX_DIGITS);
printf("Sum of digits in %d^%d = %d\n", base, power,
digitsum(result, MAX_DIGITS));
return 0;
}
int main( int argc, char * argv[]){
int n;
FILE * fin;
fin = fopen( argv[1], "r");
while(fscanf( fin, "%d", &n) != EOF){
printf( "The sum of %d is %d. \n",n, digitsum(n));
if( NULL == fin){
printf( "Failure to open file:\n");
return 1;
}
}
fclose( fin );
return 0;
}
int digitsum( int digit, int sum ){
if( digit <= 0 )
return sum;
else{
sum += digit % 10;
return digitsum( digit / 10, sum );
}
}
int main( int argc, char* argv[] ){
int n = 0;
int y = 0;
FILE* fin;
fin = fopen(argv[1], "r");
printf("\nThe sum of the digits of the numbers entered are: \n");
while(fscanf(fin, "%d", &n) != EOF){
y = digitsum(n);
printf("%d",y);
printf("\n");
}
fclose(fin);
return 0;
}
int main( int argc, char *argv[] ) {
char *characters;
int sum, n;
FILE *scanfile;
scanfile = fopen( argv[1] , "r" );
fscanf( scanfile, "%s", &characters );
n = atoi( characters );
sum = digitsum( n );
printf( "The sum is %d.\n", sum );
fclose( scanfile );
return 0;
}
int main( int argc, char *argv[] ) {
FILE* fin;
int x ;
int i = 1 ;
int sum ;
fin = fopen( argv[i], "r" ) ;
while( fscanf( fin,"%d", &x )!= EOF ) {
sum = digitsum( x ) ;
printf( "\nThe digitsum of %d is %d.\n", x , sum );
}
printf( "\n") ;
fclose( fin ) ;
return 0 ;
}
int main() {
printf("num %d: %d\n",123765765,digitsum(123765765));
printf("recnum %d: %d\n",123765765,recdigitsum(123765765));
return 0;
}
int digitsum ( int nextint ) {
if ( nextint < 10 )
return nextint;
else
return nextint % 10 + digitsum ( nextint / 10 );
}
