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You must use platform specific and unique non-ASCII values for the keys, and then you must use these specific symbolic names in your definitions.
===void ciol_moveio_move(int r, int c)===
Positions the cursor at row r and column c, where row 0 is the top row and column 0 is the leftmost column. If either parameter is invalid, your function has undefined results. Your function does not flush any output buffer.
===void ciol_putchio_putch(int c)===
Displays the character c at the current cursor position and advances the cursor by one position to the right. If the cursor is already at the rightmost column of the screen, the advance is system dependent. This function does not flush any output buffer.
===void ciol_putstrio_putstr(const char *s)===
Displays the null-terminated string pointed to by s starting at the current cursor position. Your function leaves the cursor just after the last character displayed. If the string exceeds in length the available space on the current line of output, your function has undefined results. Your function does not flush any output buffer.
===void ciol_displayio_display(const char *str, int row, int col, int len)===Outputs the null-terminated string pointed to by "str", on the screen starting at row "row" and column "col" on the screen, upto "len" characters. As with ciol_moveio_move(), 0 is the top row, and 0 is the leftmost column. If the string is longer than "len", then only "len" characters are displayed, but if it is shorter than "len", then the entire string is displayed left-justified in the field. However, if "len" is 0 or less, then the field length is considered to be the actual length of the string (i.e. the entire string is displayed). Afterwards, the cursor is positioned after the last character of the field. (Note that on systems where output is buffered, this function should not flush the output buffer). The results are undefined if the specified values indicate a field that does not fit on the screen.