C语言全部题目及答案.doc

C语言全部题目及答案 Exercise 1: Programming Environment and Basic Input/Output Write a program that prints “This is my first program!” on the screen. Save this program onto your own disk with the name of e2-1a; Run this program without opening Turbo C; Modify this program to print “This is my second program!”, then save it as e2-1b. Please do not overwrite the first program. Write a program that prints the number 1 to 4 on the same line. Write the program using the following methods: Using four “printf” statements. Using one “printf” statement with no conversion specifier (i.e. no ‘%’). Using one “printf” statement with four conversion specifiers 3．(a) Write a program that calculates and displays the number of minutes in 15 days. (b) Write a program that calculates and displays how many hours 180 minutes equal to. (c) (Optional) How about 174 minutes? ANSWERS: #includestdio.h int main() { printf(This is my first program!); return 0; } #includestdio.h int main() { printf(This is my second program!); return 0; } #includestdio.h int main() { printf(1); printf(2); printf(3); printf(4); return 0; } #includestdio.h int main() { printf(1234); return 0; } #includestdio.h int main() { printf(%d%d%d%d,1,2,3,4); return 0; } #includestdio.h int main() { float days,minutes; days = 15; minutes = days * 24 * 60; printf(The number of minutes in 15 days are %f\n, minutes); return 0; } #includestdio.h int main() { float minutes,hours; minutes = 180; hours = minutes / 60; printf(180 minutes equal to %f hours\n, hours); return 0; } #includestdio.h int main() { float minutes,hours; minutes = 174; hours = minutes / 60; printf(174 minutes equal to %f hours\n, hours); return 0; } Exercise 2: Data Types and Arithmetic Operations 1. You purchase a laptop computer for $889. The sales tax rate is 6 percent. Write and execute a C program that calculates and displays the total purchase price (net price + sales tax). 2．Write a program that reads in the radius of a circle and prints the circle’s