Why is this happening and how to fix this

[Abhimanyu0197]

~/Windows-KeySubtractor (babu13)$ make gcc -O3 -c sha256/sha256.c -o sha256.o gcc -O3 -c base58/base58.c -o base58.o gcc -O3 -c rmd160/rmd160.c -o rmd160.o gcc -O3 -c util.c -o util.o gcc -o keysubtracter keysubtracter.c util.o sha256.o base58.o rmd160.o -lgmp keysubtracter.c: In function ‘set_bit’: keysubtracter.c:694:57: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘uint64_t’ {aka ‘long unsigned int’} [-Wformat=] 694	fprintf(stderr, "[+] Keys to Generate: %d\n", N);	~^ ~
int uint64_t {aka long unsigned int}
%ld

keysubtracter.c: In function ‘set_range’: keysubtracter.c:783:57: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘uint64_t’ {aka ‘long unsigned int’} [-Wformat=] 783	fprintf(stderr, "[+] Keys to Generate: %d\n", N);	~^ ~
int uint64_t {aka long unsigned int}
%ld