Programming in C Theory and Lab EST 102 for KTU 2019 Scheme- Dr Binu V P

Debugging  C Program using gdb Step 1. Compile the C program with debugging option -g Compile your C program with -g option. This allows the compiler to collect the debugging information. Eg:         $cc -g test.c  //test.c is the sample program to debug Step 2. Launch gdb Launch the C debugger (gdb) as shown below.     $gdb a.out Step 3. Set up a break point inside C program Syntax:     break [file_name]:line_number Eg:         break test.c:3 // this will set a break point at line number3 Places break point in the C program, where you suspect errors. While executing the program, the debugger will stop at the break point, and gives you the prompt to debug. Step 4. Execute the C program in gdb debugger You can start running the program using the run command in the gdb debugger.   Eg: run [args]  // args are optional Step 5. Printing the variable values inside gdb debugger Syntax: print {variable} Example:     print i Step 6. Continue, stepping over and in – gdb comm