Submission #2200793

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Source Code Expand

long a,b;
main(){
	scanf("%ld%ld",&a,&b);
	printf("%.lf\n",1+log2(b/a));
}

Submission Info

Compile Error

./Main.c:2:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
 main(){
 ^
./Main.c: In function ‘main’:
./Main.c:3:2: warning: implicit declaration of function ‘scanf’ [-Wimplicit-function-declaration]
  scanf("%ld%ld",&a,&b);
  ^
./Main.c:3:2: warning: incompatible implicit declaration of built-in function ‘scanf’
./Main.c:3:2: note: include ‘<stdio.h>’ or provide a declaration of ‘scanf’
./Main.c:4:2: warning: implicit declaration of function ‘printf’ [-Wimplicit-function-declaration]
  printf("%.lf\n",1+log2(b/a));
  ^
./Main.c:4:2: warning: incompatible implicit declaration of built-in function ‘printf’
./Main.c:4:2: note: include ‘<stdio.h>’ or provide a declaration of ‘printf’
./Main.c:4:20: warning: implicit declaration of function ‘log2’ [-Wimplicit-function-declaration]
  printf("%.lf\n",1+log2(b/a));
                    ^
./Main.c:4:20: warning: incompatible implicit declaration of built-in function ‘log2’
./Main.c:4:20: note: include ‘<math.h>’ or provide a declaration of ‘log2’

Judge Result