"C语言基础练习：海伦公式求三角形面积含错误提示"

The C programming exercise provided in the document "C语言编程题及答案.doc" includes a task that requires the calculation of the area of a triangle using the Heron's formula. The user is prompted to input the lengths of the three sides of the triangle, denoted as a, b, and c. Heron's formula for calculating the area of a triangle is given as: area = √(s*(s - a)*(s - b)*(s - c)), where s = (a + b + c) / 2 Before proceeding with the calculation, the program first checks whether the input lengths of the sides can form a valid triangle. This is done by verifying whether the sum of any two sides of the triangle is greater than the third side. If the condition is not met, the program displays a corresponding prompt informing the user that the input values do not form a valid triangle. If the input values do form a valid triangle, the program proceeds to calculate the area using Heron's formula. The calculated area is then displayed as the output to the user. Overall, this exercise serves as a practical application of basic C programming concepts such as input/output operations, conditional statements, and mathematical calculations. It also reinforces the understanding of geometric formulas and their implementation in programming. By completing this exercise, the user gains hands-on experience in problem-solving and algorithmic thinking in the C programming language.