#include <stdio.h>
int main()
{   
    int number1, number2, sum;
    printf("Enter two integers: ");
    scanf("%d %d", &number1, &number2);
    
    // calculating sum
    sum = number1 + number2;    

    printf("%d + %d = %d", number1, number2, sum);
    return 0;
}

Above C program consist of following C tokens-

Keywords-    
int

return

Identifiers-    
main
number1    
number2   
sum
printf

scanf

Literals (Constants)-
"Enter two integers: "
"%d %d"
"%d + %d = %d"

0

Operators-
&
=

+

Separators-
()
{}
,
;