Write a program to display lines that contain hard-coded constants in C language

This is the question and I can't understand any bit of it. Can someone suggest any logic or method to do? Sorry for not being clear with the question earlier.

Write a program to display lines that contain hard-coded constants in a given C-code file ( C file name is passed a command-line argument).In addition, it also displays the line number on which hard-coding is detected. You can assume that the code is given to your program goes through compilation without errors. The following cases of hard-coding can be treated as normal and need not be reported by the program. • Assignments to 0 • Assignments to 1 • Increments and decrements in steps of 1 For example, given the following code:

#define MULT(A,B)A*B
#define N 5
main()
{
 int i=0;
 int a;
 printf("%d\n", MULT(1+2, 3));
 printf("%d\n", MULT(1+2, 3+4));
 i=i+5;
 for(i=0;i<N;i=i+1)
     printf("i",i);
 i=1;
 while(i<5)
     printf("i",i++);
 a=0xdeadbeef;
 i=5;
}

For the above code the output should be:

9: printf("%d\n", MULT(1+2, 3)); 
10: printf("%d\n", MULT(1+2, 3+4)); 
12: i=i+5;
17. while(i<5)
19. a=0xdeadbeef;
21. i=5;

The program should not report following lines as hard-coded:

for(i=0;i<N;i=i+l) /* Assignment to 0, increments in steps of 1 */ 
int i=0;/* Asslgnment to 0 */ 
i=1;/* Assignment to 1 */

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