分析C程序的函数调用机制,阐述函数调用可视化实现技术,并利用GNU编译器工具链跟踪函数,对函数调用进行可视化展示,从而有助于对复杂函数调用特别是递归调用中的算法设计、栈区使用、代码优化等内容的理解。- The thesis analyses the mechanism of function call in C program,explains the realization technology of Visualization of function call,and displays the visualization of function call using trace functions in GNU compiler,which contributes to the comprehension of the algorithm design,the use of stack,the code optimization in complex function call,specially in recursive function call.