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Alex Rivera
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I want my C program to ask the user to type the name of the file they want to open and print the contents of that file to the screen. I am working from the C tutorial and have the following code so far. But when I execute it, it doesn't actually allow me to enter the file name. (I get the 'press any button to continue', I am using codeblocks) What am I doing wrong here? #include <stdio.h> int main ( int argc, char *argv[] ) { printf("Enter the file name: \n"); //scanf if ( argc != 2 ) /* argc should be 2 for correct execution */ { /* We print argv[0] assuming it is the program name */ printf( "usage: %s filename", argv[0] ); } else { // We assume argv[1] is a filename to open FILE *file = fopen( argv[1], "r" ); /* fopen returns 0, the NULL pointer, on failure */ if ( file == 0 ) { printf( "Could not open file\n" ); } else { int x; /* Read one character at a time from file, stopping at EOF, which indicates the end of the file. Note that the idiom of "assign to a variable, check the value" used below works because the assignment statement evaluates to the value assigned. */ while ( ( x = fgetc( file ) ) != EOF ) { printf( "%c", x ); } fclose( file ); } } return 0; }
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