上海交通大学交大密西根 联合学院·一 ◆ ■ 181 UM-SJTU Joint Institute University of Michigan Shanghal Jiao Tong University Composition of a Function int main (void) main function declaration ‘'Function body start MsgConsoleT console; Variable declaration;here an object called console is declared to be of class MsgConsoleT console.printLine Method function printLine of ("welcome to the Vg101 class ConsoleT is called. class"); return 0; Return statement End of the function bodyComposition of a Function Composition of a Function int main (void) { MsgConsoleT console; console.printLine ("welcome to the Vg101 class“); return 0; } • main function declaration • ‘{’ Function body start • Variable declaration; here an object called console is declared to be of class MsgConsoleT • Method function printLine () of class ConsoleT is called . • Return statement • ‘}’ End of the function body