Question

How to find the first capital letter in a string in C

Answer 1

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

char getFirstCapitalLetter(char *s) {
    int len = strlen(s);
    
    for (int i = 0; i < len; i++) {
        if (isupper(s[i])) {
            return s[i]; 
        }
    }
    
    return 0;
}
  
int main()
{
    char s[20] = "c proGrAmmig";
    
    char ch = getFirstCapitalLetter(s);
    
    if (ch == 0) {
        printf("No capital letter");
    }
    else {
        printf("The first capital letter is: %c", ch);   
    }
  
    return 0;
}
  
 
 
  
/*
run:
  
The first capital letter is: G
  
*/

 

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