Question

Using C

Q3. Prompt the user to enter two operands and one operation. Prompt for operation first -> ‘+’,’-’,’*’ or ‘/’, accept the arithmetic sign for the operation as user’s input and then accordingly specify the types of operands in prompt for operands. Then carry out the operation and print the result.

Show two sample outputs in screen captures - one for division and another for any other operation of your choice. Use switch construct.

Fill the below blanks -

Datatype used to store operation is _________.

For division without loss of remainder, at least one operand must be of type _____________.

Answer 1

Fill the below blanks -

• Datatype used to store operation is ___char______.

For division without loss of remainder, at least one operand must be of type ____double_________.

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Screenshot

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Program

//Header file
#include<stdio.h>
//MAin function
int main(){
   //Variables declaration for user input
    char ch;
   int val1, val2;
   double val3;
   //Prompt for operator
   printf("Enter operator: ");
   scanf(" %c", &ch);
   //Error check
   while (ch != '+'&&ch != '-'&&ch != '*'&& ch != '/') {
       printf("Error!!!!Operator should be +-* or /.\n");
       printf("Enter operator: ");
       scanf(" %c", &ch);
   }
   //Carry out operations
   switch (ch) {
       //Addition
   case '+':
       printf("Enter two numbers: ");
       scanf("%d %d", &val1, &val2);
       printf("Sum of %d %c %d %c %d\n", val1, ch, val2, '=', (val1 + val2));
       break;
       //Subtraction
   case '-':
       printf("Enter two numbers: ");
       scanf("%d %d", &val1, &val2);
       printf("Difference of %d %c %d %c %d\n", val1,ch, val2, '=', (val1 - val2));
       break;
       //Multiplication
   case '*':
       printf("Enter two numbers: ");
       scanf("%d %d", &val1, &val2);
       printf("Product of %d %c %d %c %d\n", val1, ch, val2, '=', (val1 * val2));
       break;
       //Division
   case '/':
       printf("Enter two numbers: ");
       scanf("%lf %d",&val3,&val2);
       while (val2 == 0) {
           printf("Error!Division overflow\n");
           printf("Enter two numbers: ");
           scanf("%lf %d", &val3, &val2);
       }
       printf("Quotient of %.2lf %c %d %c %.2lf\n", val3, ch, val2, '=', (val3/val2));
       break;
   }
    return 0;
}

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Output

output1:-

Enter operator: /
Enter two numbers: 4 0
Error!Division overflow
Enter two numbers: 4 3
Quotient of 4.00 / 3 = 1.33

output2:-

Enter operator: =
Error!!!!Operator should be +-* or /.
Enter operator: +
Enter two numbers: 15 16
Sum of 15 + 16 = 31