Question

How to count the letters, spaces, numbers and other characters of a string in C

Answer 1

#include <stdio.h>
#include <ctype.h>
 
void count(char* s) {
    int letter = 0, spaces = 0, numbers = 0, otherchars = 0;
         
    for (int i = 0; s[i]; i++) {
        if (isalpha(s[i])) {
            letter++;
        }
        else if (isdigit(s[i])) {
            numbers++;
        }
        else if (isspace(s[i])) {
            spaces++;
        }
        else {
            otherchars++;
            }
    }
    printf("letter: %d\n", letter);
    printf("space: %d\n", spaces);
    printf("number: %d\n", numbers);
    printf("other: %d\n", otherchars);
}
 
int main(void) {
    char s[] = "C99 Pro $%     Prog()ramming   99 !!!";
         
    count(s);
}
 
 
 
 
/*
run:
   
letter: 15
space: 11
number: 4
other: 7
   
*/

 

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