Switch case and if

Source: Internet
Author: User
Tags case statement switch case


The switch case statement is occasionally used in programming, and there are two errors in the handling of case statements, which are summarized as follows:

1 case must be constant, cannot use ' < ' or ' > ' This logical operation after 2 case if ' | | ' or ' && ' logical operation, then the actual is 1 or 0#include <iostream>using namespace std;int main (int argc, char * argv[]) {    int i;< c1/>cin>>i;    switch (i)    {case        :            cout<<i<<endl;            break;        Case ' a ':            cout<<i<<endl;            break;        Default:            cout<< "Hello" <<endl;    }    return 0;}



There are two main errors that can occur during programming using the IF process:

1Determine logical errors, such as if (i=0)2 ifElseIf ElseIf only executes one if or one does not perform # include<iostream>using namespacestd;intMainintargcChar*argv[]) {    inti; CIN>>i; if(i==1) cout<<i<<Endl; Else if(i>0) cout<<i+1<<Endl; Else if(i==0) cout<<i<<Endl; return 0;}

Switch case and if

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