#include
#include
int main(void){
int num;
char buf[5];
printf("Number: ");
if ( scanf("%d", &num) != 1 || num < 1000 || num > 9999 ){
printf("Wrong number! ");
exit(1);
}
sprintf(buf, "%d", num);
printf("%s ", ((buf[0] + buf[1]) == (buf[2] + buf[3])) ? "yes" : "no");
exit(0);
}
#include
int main(void){
int num;
char buf[5];
printf("Number: ");
if ( scanf("%d", &num) != 1 || num < 1000 || num > 9999 ){
printf("Wrong number! ");
exit(1);
}
sprintf(buf, "%d", num);
printf("%s ", ((buf[0] + buf[1]) == (buf[2] + buf[3])) ? "yes" : "no");
exit(0);
}