C Programming Code Examples
C > Mathematics Code Examples
A calculator that allows multiple calculations
/* A calculator that allows multiple calculations */
#include <stdio.h>
int main()
{
double numberA = 3.6;
double numberB = 1.8;
char operation = '+';
char answer = 0;
switch(operation)
{
case '+':
printf("= %lf\n", numberA + numberB);
break;
case '-':
printf("= %lf\n", numberA - numberB);
break;
case '*':
printf("= %lf\n", numberA * numberB);
break;
case '/':
if(numberB == 0)
printf("\n\n\aDivision by zero error!\n");
else
printf("= %lf\n", numberA / numberB);
break;
case '%':
if((long)numberB == 0)
printf("\n\n\aDivision by zero error!\n");
else
printf("= %ld\n", (long)numberA % (long)numberB);
break;
default:
printf("\n\n\aIllegal operation!\n");
}
}
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