"If not equal a number" in C Plus Plus?

Question

how you write "If not equal a number" in C Plus Plus ?

for example

int numb;

cout << "Enter a number" << endl;

cin >> numb;

if (numb!=a number)

{

cout << "That's is not a number";

}

Answer 1

#include &lt;iostream&gt;

#include &lt;cstring&gt;

using namespace std;

int main(int argc, char * argv[]){

char numb[100];

//int verify will be used as a flag to check the whole string

int verify=0;

//Prompt for input

cout&lt;&lt;&quot;Please enter a number&quot;;

cin&gt;&gt;numb;

for(int i=0; i&lt;strlen(numb);i++){

if(numb[i].isdigit()){

//Verify will be used to check and see if the input entered

//is a number. It will work by incrementing every time it //passes the isdigit() checking function. If the value of it is //the same as the the length of the string entered then you //know that the input is valid

verify++;

}

else{

cout&lt;&lt;&quot;That was not a number&quot;&lt;&lt;endl;

break;

}

}

if(verify==strlen(numb){

cout&lt;&lt;&quot;That was a number&quot;;

}

cin.get();

return 0;

}