Arithmetic operators

Figure 1 shows how to use arithmetic operators, and then describes certain arithmetic, assignment, unary, and cast operators in more detail. It summarizes how to add, subtract, multiply and divide decimal variables.

Figure 1. Arithmetic operators example

/*this example demonstrates arithmetic operations on decimal variables*/

#include <decimal.h>            /* decimal header file */
#include <stdio.h>

int main(void)
{

decimal(10,2) op_1 = 12d;
decimal(5,5) op_2 = -.12345d;
decimal(24,12) op_3 = 12.34d;
decimal(20,5) op_4 = 11.01d;
decimal(14,5) res_add;
decimal(25,2) res_sub;
decimal(15,7) res_mul;
decimal(31,14) res_div;

res_add = op_1 + op_2;
res_sub = op_3 - op_1;
res_mul = op_2 * op_1;
res_div = op_3 / op_4;

printf("res_add =%D(*,*)\n",digitsof(res_add),
       precisionof(res_add),res_add);
printf("res_sub =%D(*,*)\n",digitsof(res_sub),
       precisionof(res_sub),res_sub);
printf("res_mul =%D(*,*)\n",digitsof(res_mul),
       precisionof(res_mul),res_mul);
printf("res_div =%D(*,*)\n",digitsof(res_div),
       precisionof(res_div), res_div);

return(0);
}