#include
int main()
{
char line[100];
int result =0;
char operator;
int value;
while (1) {
printf("Result: %d\n", result);
printf("Enter operator and number: ");
fgets(line, sizeof(line), stdin);
sscanf(line, "%c %d", &operator, &value);
if ((operator == 'q') || (operator == 'Q'))
break;
switch (operator) {
case '+':
result += value;
break;
case '-':
result -= value;
break;
case '*':
result *= value;
break;
case '/':
if (value == 0) {
printf("Error:Divide by zero\n");
printf(" operation ignored\n");
} else
result /= value;
break;
default:
printf("Unknown operator %c\n", operator);
break;
}
}
return (0);
}