1 #include <ctype.h> 2 3 /* Replace char 'old' by char 'new' in source */ chrreplace(char * source,char old,char new)4 void chrreplace(char *source, char old, char new) 5 { 6 while (*source) { 7 source++; 8 if (source[0] == old) source[0]=new; 9 } 10 } 11 12