阅读下列C程序，回答下列问题。 [C程序] int GetMaxDay( int year, intmonth ) { int maxday = 0; //1 if ( month ＞= 1 && month ＜= 12 ) { //2,3 if ( month == 2 ) { //4 if ( year % 4 == 0 ) { //5 if ( year % 100 == 0 ) { //6 if ( year % 400 == 0 ) } //7 maxday = 29; //8 else //9 maxday = 28; } else //10 maxday = 29; } else //11 maxday = 28; } else{ //12 if(month==4||month==6||month==9||month==11) //13, 14, 15, 16 maxday = 30; //17 else //18 maxday = 31; } } return maxday; //19 } 2、请画出上述程序的控制流图，并计算其环路复杂度VG.。

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阅读下列C程序，回答下列问题。
[C程序]    int GetMaxDay( int year, intmonth ) {    int maxday = 0;                              //1    if ( month ＞= 1 && month ＜= 12 ) {           //2,3    if ( month == 2 ) {                           //4    if ( year % 4 == 0 ) {                        //5    if ( year % 100 == 0 ) {                      //6    if ( year % 400 == 0 ) }                      //7    maxday = 29;                                 //8    else                                         //9    maxday = 28;    }    else                                         //10    maxday = 29;    }    else                                         //11    maxday = 28;    }    else{                                        //12    if(month==4||month==6||month==9||month==11)   //13, 14, 15, 16    maxday = 30;                                 //17    else                                         //18    maxday = 31;    }    }    return maxday;                               //19    }
2、请画出上述程序的控制流图，并计算其环路复杂度VG.。

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