Sum and Difference of Numbers

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
#define max_len 10
int main() 
{

    /* Enter your code here. Read input from STDIN. Print output to STDOUT */
    char ch, s[max_len], sen[max_len];
    
    scanf("%c", &ch);
    scanf("%s",s);
    scanf("\n"); 
    scanf("%[^\n]%*c",sen);
    printf("%c\n",ch);
    printf("%s\n",s);
    printf("%s",sen);

    return 0;
}