The structured statements in c ++ determine the use of if branch statements switch loop statements while and do while loop statements for, structured switch

The structured statements in c ++ determine the use of if branch statements switch loop statements while and do while loop statements for, structured switch

Job 1:

Use the if statement, according to 1 ~ 7. What is the day of the week output? Program.

Method 1: directly use a separate if statement

# Include <iostream> using namespace std; int main () {int numberWeek; cout <"enter a 1 ~ Integer between 7 "; cin> numberWeek; if (numberWeek = 1) {cout <" Today is Monday "<endl;} if (numberWeek = 2) {cout <"Today is Tuesday" <endl;} if (numberWeek = 3) {cout <"Today is Wednesday" <endl ;} if (numberWeek = 4) {cout <"Today is Thursday" <endl;} if (numberWeek = 5) {cout <"Today is Friday" <endl;} if (numberWeek = 6) {cout <"Today is Saturday" <endl ;} if (numberWeek = 7) {cout <"Today is Sunday" <endl;} return 0 ;}

Method 2: Use the associated if statement

# Include <iostream> using namespace std; int main () {int numberWeek; cout <"enter a 1 ~ Integer between 7 "; cin> numberWeek; if (numberWeek = 1) {cout <" Today is Monday "<endl;} else if (numberWeek = 2) {cout <"Today is Tuesday" <endl;} else if (numberWeek = 3) {cout <"Today is Wednesday" <endl ;} else if (numberWeek = 4) {cout <"Today is Thursday" <endl;} else if (numberWeek = 5) {cout <"Today is Friday" <endl;} else if (numberWeek = 6) {cout <"Today is Saturday" <endl ;} else if (numberWeek = 7) {cout <"Today is Sunday" <endl ;}else {cout <"the number you entered does not meet the requirements. "<Endl;} return 0 ;}

Exercise questions: Finish the seasonal output of one year and 12 months. If the output is in August, it is in summer.

Job 2:

Use the switch statement to complete the seasonal output for one year and 12 months. If it is output in August, This is the summer program.

# Include <iostream> using namespace std; int main () {int monthNumber; cout <"enter a 1 ~ Integer between 12 "; cin> monthNumber; switch (monthNumber) {case 3: case 4: case 5: cout <" this is Spring "<endl; break; case 6: cout <"this is Summer" <endl; break; case 7: case 8: cout <"this is Summer" <endl; break; case 9: case 10: case 11: cout <"this is Autumn" <endl; break; case 12: case 1: case 2: cout <"this is winter" <endl; break; default: cout <"the number you entered does not meet the requirements. "<Endl; break;} return 0 ;}

Use the switch statement to practice the use of arithmetic operators. Input two floating-point numbers at will and output the +-*/% of the two floating-point numbers.

Case: Can a statement be switched anywhere? Default: Can statements be written anywhere? Is the case statement empty? Yes.

Job 3:

Use the do while and while statements to output a rectangle consisting of *. The width and height of the rectangle must be 10 and 20.