i have own data structure defined:
struct data { int partnumber; char nameoftool[ 30 ]; int numinstock; double priceper; }; and i've got function giving me problems:
void inputorupdate(fstream &toolsfile) { int accounttomodify; char nameoftool[ 30 ]; int numinstock; double priceper; printf( "enter record number ( 1 100, 0 return main menu )" ); scanf( "%d", &accounttomodify ); if ( accounttomodify > 0 && accounttomodify <= 100 ) { printf( "enter tool name, quantity, cost" ); scanf( "%29s %d %d", nameoftool, numinstock, priceper ); data tooltowrite = { accounttomodify, nameoftool[ 30 ], numinstock, priceper }; toolsfile.seekg((accounttomodify - 1) * sizeof(toolsfile)); toolsfile.write((char *)&tooltowrite, sizeof(toolsfile)); } else { printf( "invalid record number provided." ); } printf( "\n\n" ); } specifically, line:
data tooltowrite = { accounttomodify, nameoftool[ 30 ], numinstock, priceper }; getting error:
[warning] converting `char' `double' but doesn't make sense me; "data" should int, string of characters, int, double, , scanf line should capturing string of characters, int, , double, , line assemble tooltowrite should expecting , integer, string of characters, integer, , double... don't understand thinks i'm converting double char if specified %29s in scanf line; %s fails well.
i feel i'm missing extremely basic , driving me nuts. ideas?
how changing line:
data tooltowrite = { accounttomodify, nameoftool[ 30 ], numinstock, priceper }; to
data tooltowrite = { accounttomodify, *nameoftool, numinstock, priceper }; 