main.c: In function '__vector_10': 
main.c:35: warning: implicit declaration of function 'sprintf' 
main.c:35: warning: incompatible implicit declaration of built-in function 'sprintf' 
main.c:35: warning: pointer targets in passing argument 1 of 'sprintf' differ in signedness 
main.c:35: warning: format '%06u' expects type 'unsigned int', but argument 3 has type 'long unsigned int' 
 
 
What's Wrong with this code? 
Please help me. Thank you