# Contains? " stdio.h "

int？ Major (Invalid) {

Dragon? s，t，n，x；

Printf ("input? Answer? Numbers ... \ ns = ");

scanf("%d "，& amps)； //enter a long integer s.

t=s，n = 1；

while(t/= 10)？ n * = 10； //Determine how many digits S has. If it is 3 digits, n= 100, and so on.

While(s){// Check each bit from high to low.

if((x = s/n)& amp； 1)/If it is odd.

(t * = 10)+= x； //Multiply t by the odd number 10+ to form a new number consisting of odd numbers.

s%=n，n/= 10； //Adjust the control variables to make correct cycle judgment.

}

printf("The？ New? Number? Is it? %d\n "，t)； //output

Return? 0;

}