char - Returning wrong file pointer -

for reason when send argv gets sends wrong file pointer. example if send string argv of getty.txt sends shakes file pointer , if send genesis.txt char array sends getty.txt. how send right file pointer back?

for (i = 3; < argc; i++) {             printf("%s\n", argv[i]);             pattern(determinefile(argv[i]), argv[2]);         }  file* determinefile(char* file) { if (strcmp(file,"getty.txt"))     return getty; else if (strcmp(file, "shakes.txt"))     return shakes; else if (strcmp(file, "genesis.txt"))     return genesis; else     return null; } 

input:

grep getty.txt genesis.txt shakes.txt

output:

getty.txt

shakes.txt: word's stage,

shakes.txt: , men , women merely players.

shakes.txt: have exits , entrances;

genesis.txt

getty.txt: 4 score , 7 years ago our fathers brought forth, upon this

getty.txt: continent, new nation, conceived in liberty, , dedicated the

shakes.txt

c strcmp returns 0 if strings match. try:

if(strcmp(a, b) == 0) {/* ... */}