<P> In the C Standard Library , the character reading functions such as getchar return a value equal to the symbolic value ( macro ) EOF to indicate that an end - of - file condition has occurred . The actual value of EOF is implementation - dependent ( but is commonly - 1 , such as in glibc ) and is distinct from all valid character codes . Block - reading functions return the number of bytes read , and if this is fewer than asked for , then the end of file was reached or an error occurred ( checking of errno or dedicated function , such as ferror is often required to determine which ) . </P>
<P> In the C Standard Library , the character reading functions such as getchar return a value equal to the symbolic value ( macro ) EOF to indicate that an end - of - file condition has occurred . The actual value of EOF is implementation - dependent ( but is commonly - 1 , such as in glibc ) and is distinct from all valid character codes . Block - reading functions return the number of bytes read , and if this is fewer than asked for , then the end of file was reached or an error occurred ( checking of errno or dedicated function , such as ferror is often required to determine which ) . </P>
what is the actual decimal numeric value of the symbol eof
what is the actual decimal numeric value of the symbol eof
implementation - dependent ( but is commonly - 1 , such as in glibc )
implementation - dependent ( but is commonly - 1 , such as in glibc )