c program to obtain the sum of first and last digit of no. first line contains T, total number of test cases. Then lines containing int N?

x = N % 10 // gives the last digit.

while (N / 10)

N = N / 10; // this while loop gives the first digit.

printf ("%d\n", N + x);

this works much better

you do not want to use T--

You want T/=10;

read the first

then keep reading last til T is zero

the last one read is the last

#include <stdio.h>

int main(void){

int T,f,l;

T=32346;

f=T%10;

T/=10;

l=T%10;

while(T){

l=T%10;

T/=10;

}

printf("sum=%d\n",l+f);

return 0;

}