how to make sure input is integer c

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Alex
06 Feb 2017
1#include <string.h>  
2
3bool isNumber(string s) 
4{ 
5    for (int i = 0; i < strlen(s); i++) 
6        if (isdigit(s[i]) == false) 
7            return false; 
8  
9    return true; 
10}
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