Falls index angegeben wird, beginnt die Suche an dieser Position. Negative Werte werden vom Ende des Strings her gezählt.
Beispiel
string s = "This is a string"; char c = 'a'; int pos = strchr(s, c); if (pos >= 0) printf("The character %c is at position %d\n", c, pos); else printf("The character was not found\n");
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