Define a variable A, input the variable and assign a value, use the for loop to take the remainder of A, output the remainder, and divide it by 10 until A equals 0.

//Reference code?

# include & ltstdio.h & gt

int？ Master ()

{

int？ N, I; //Define integer variables?

scanf("%d "，& ampn)； //Input assignment?

for(； n & gt0; ) {//Take the remainder of the variable and output the remainder. Divide the variable by 10 until the variable equals 0?

printf("%d "，n % 10)； //Output remainder?

n/= 10； //Divide the variable by 10?

}

printf(" \ n ")；

Return? 0;

}

/* Running result:?

123456

65432 1

*/