汇编语言条件语句

汇编语言中的条件语句

#include<stdio.h>
#include<stdlib.h>

char getGrade(int grade) {
	if (grade < 60) {
		return 'F';
	}
	else if (grade == 60) {
		return 'E';
	}
	else {
		return 'D';
	}
}

char __declspec(naked) getGradeByAsm(int grade) {
	__asm {
		//保存环境
		push ebp;
		mov ebp,esp;

		//函数体
	
		mov ebx,[grade];
		cmp ebx,60;
		jge elseif;
		mov eax, 'F';
		jmp fun_end;
		
	
	elseif: 
		cmp ebx,60;
		jne elseif2;
		mov eax, 'E';
		jmp fun_end;
	elseif2:
		mov eax, 'D';
		jmp fun_end;


    fun_end:
		//恢复环境
		mov esp, ebp;
		pop ebp;

		//返回
		ret
	}
}

int main()
{
	int grade = 0;
	scanf_s("%d", &grade);
	printf("%c",getGradeByAsm(grade));

}