Read until the character `?`

readUntil.c

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

int main(void) {
    char line[30000];
    char str[30000];

    FILE * pFile = fopen ("myfile.txt" , "r");
    
    /* Avoid buffer overflow by using fgets() */
    while (fgets(line, sizeof(line), pFile) != 0) {
        if (sscanf(line, "%[^?]s", str) != 1)  /* match [^?] */
            break;  /* stop for this line if the pattern doesn't match */
        
        /* print the result and the length */
        printf("Found <<%s>>\n", str);
        printf("The size of str is %d\n", strlen(str));
    }
 
    int ch;  /* faliure position */
    if ((ch = getc(pFile)) != EOF)
        printf("Failed on character %d (%c)\n", ch, ch);
 
    return 0;
}