常用C语言与汇编语言之间的对应关系：if else；switch；条件表达式；while；for等

下面是常用C语言与汇编语言之间的对应关系：

1. if else:

C语言：

if (condition) {
    // do something
}
else {
    // do something else
}

汇编语言：

    ; compare the condition
    cmp condition, 0
    ; jump if the condition is false
    je else_branch
    ; do something if the condition is true
    ; ...
    jmp end_if
else_branch:
    ; do something else if the condition is false
    ; ...
end_if:

2. switch:

C语言：

switch (expression) {
    case value1:
        // do something
        break;
    case value2:
        // do something else
        break;
    default:
        // do something if none of the above cases match
        break;
}

汇编语言：

    ; compare the expression to value1
    cmp expression, value1
    ; jump to label1 if equal
    je label1
    ; compare the expression to value2
    cmp expression, value2
    ; jump to label2 if equal
    je label2
    ; jump to default_label if none of the above cases match
    jmp default_label
label1:
    ; do something for case value1
    ; ...
    jmp end_switch
label2:
    ; do something for case value2
    ; ...
    jmp end_switch
default_label:
    ; do something for default case
    ; ...
end_switch:

3. 条件表达式：

C语言：

result = condition ? true_value : false_value;

汇编语言：

    ; compare the condition
    cmp condition, 0
    ; jump to else_label if false
    je else_label
    ; move true_value to result
    mov result, true_value
    ; jump to end_if_label
    jmp end_if_label
else_label:
    ; move false_value to result
    mov result, false_value
end_if_label:

4. while:

C语言：

while (condition) {
    // do something
}

汇编语言：

while_loop:
    ; compare the condition
    cmp condition, 0
    ; jump out of the loop if false
    je end_while
    ; do something in the loop
    ; ...
    ; jump back to the top of the loop
    jmp while_loop
end_while:

5. for:

C语言：

for (i = 0; i < count; i++) {
    // do something
}

汇编语言：

    ; initialize i to 0
    mov i, 0
for_loop:
    ; compare i to count
    cmp i, count
    ; jump out of the loop if i >= count
    jge end_for
    ; do something in the loop
    ; ...
    ; increment i
    inc i
    ; jump back to the top of the loop
    jmp for_loop
end_for: