C++ is string a number

bool isStringNumber(string str){
for(int i=0;i<str.length();i++){
if(str[i]<'0'||str[i]>'9'){
return false;
}
}
return true; 
}
//Beleive in Allah!
//just my slogan

Similar codes

0 vote172 views1 answer
Pca compact trick
C++
0 vote181 views1 answer
Fast i/o in c++
C++
0 vote216 views1 answer
C++ get environment variable
C++
19 votes159 views2 answers
C++ file .
C++
3 votes166 views4 answers
C++ char array size
C++
0 vote188 views2 answers
Iostream c++
C++
2 votes170 views1 answer
C++ custom compare in set
C++
1 vote158 views1 answer
How to check is some number is divisible by 3 in c++
C++
1 vote163 views1 answer
C++ remove n characters from string
C++
0 vote151 views1 answer
How to get window size sfml
C++