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calculator.c
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calculator.c
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#include "calculator.h"
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
int a,b, result;
char opr;
if(argc!=4)
{
printf("Invalid arguments...\n");
return -1;
}
//get values
a = atoi(argv[1]);
b = atoi(argv[3]);
//get operator
opr=argv[2][0];
//calculate according to operator
switch(opr)
{
case '+':
result = add_(a, b);
break;
case '-':
result=sub_(a,b);
break;
case '_':
result=multiply_(a,b);
break;
case '/':
result = div_(a,b);
default:
result=0;
break;
}
if(opr=='+' || opr=='-' || opr=='_'|| opr== '/')
printf("Result: %d %c %d = %d\n",a,opr,b,result);
else
printf("Undefined Operator...\n");
return 0;
}
/**
* Function to add two numbers
*/
float add_(float num1, float num2)
{
return num1 + num2;
}
/**
* Function to subtract two numbers
*/
float sub_(float num1, float num2)
{
return num1 - num2;
}
/**
* Function to multiply two numbers
*/
float multiply_(float num1, float num2)
{
return num1 * num2;
}
/**
* Function to divide two numbers
*/
float div_(float num1, float num2)
{
return num1 / num2;
}