(b) Write a program that let user to key in two integer numbers and perform calculation by selecting one of the math's operators (+, -, * and /) as shown in Figure 1.1. *Note: any number divided by...

Extracted text: (b) Write a program that let user to key in two integer numbers and perform calculation by selecting one of the math's operators (+, -, * and /) as shown in Figure 1.1. *Note: any number divided by zero is invalid. Key in two numbers: 10 10 1. + 2. 3. 4./ Select operator: 1 Key in two numbers: 57 1. + 2. - 3. * 4. / Select operator: 2 10 + 10 = 20 5- 7 = -2 Key in two numbers: 14 25 1. + 2. - 3. * 4. / Select operator: 3 Key in two numbers: 9 0 1. + 2. - 3. * 4. / Select operator: 4 Invalid operation! 14 25 = 350 Figure 1.1: Four sample outputs of basic mathematical operations