Question

How to check if a string contains any special character in C

Answer 1

#include <stdio.h>
#include <stdbool.h>
#include <string.h>

bool contains_special_character(char s[], int n){
   for (int i = 0; i < n; ++i) {
      if (s[i] == '!' || s[i] == '@' || s[i] == '#' || s[i] == '$'
		|| s[i] == '%' || s[i] == '^' || s[i] == '&' || s[i] == '*'
		|| s[i] == '(' || s[i] == ')' || s[i] == '-' || s[i] == '_' 
		|| s[i] == '}' || s[i] == '[' || s[i] == ']' || s[i] == ':'
		|| s[i] == ';' || s[i] == '"' || s[i] == '\'' || s[i] == '<'
		|| s[i] == '>' || s[i] == '.' || s[i] == '/' || s[i] == '?'
		|| s[i] == '~' || s[i] == '`' || s[i] == '{' || s[i] == '='
		|| s[i] == '+') {
         return true;
      }
   }
   return false;
}

int main() {
    char s[] = "c php python c++ java";
	
	int n = strlen(s);
	if (contains_special_character(s, n))
		puts("yes");
	else
		puts("no");
		
    return 0;
}


 
 
/*
run:
 
yes
 
*/

 

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