是什么阻止编译器编译 for 语句的 for-init-statement 中的#include <stdio.h>
int main(void)
{
int limit=1000, trans=0, cash;
do
{
printf("Enter the amount of cash");
scanf("%d", &cash);
if(limit>=trans+cash)
{
printf("Transaction Successful of Rs. %d\n", cash);
trans=trans+cash;
}
else
{
printf("Transaction overlimit!\n");
}
}
while(limit>=trans+cash);
printf("Total Transaction: Rs. %d\n", trans);
}
？
例如：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Clickable background</title>
<!-- Citation from http://google.github.io/material-design-icons/#setup-method-1-using-via-google-web-fonts
Similar to other Google Web Fonts, the correct CSS will be served to
activate the 'Material Icons' font specific to the browser. An additional CSS
class will be declared called .material-icons. Any element that uses this
class will have the correct CSS to render these icons from the web font. -->
<link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
<style type="text/css" media="screen">
/* Make clickable text on links invisible. */
.clickable-background {
font-size:0;
}
.clickable-background:hover ::after, .clickable-background ::after {
content: '';
display:inline-block;
width: 48px;
height: 48px;
/*
The default clickable background image (mouse for PC) to display if no
background image is defined or it is crippled or not reachable. See the
`fill="rgb(255, 0, 0)"' key=value, this is the color (red) of the .svg image.
The width and height are defined above, so no need to change them in the source.
All the images are taken from: https://materialdesignicons.com/
*/
background: url('data:image/svg+xml;utf8,<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="24" height="24" fill="rgb(255, 0, 0)" viewBox="0 0 24 24"><path d="M11,1.07C7.05,1.56 4,4.92 4,9H11M4,15A8,8 0 0,0 12,23A8,8 0 0,0 20,15V11H4M13,1.07V9H20C20,4.92 16.94,1.56 13,1.07Z" /></svg>');
}
/* Every image need to have its own rule defined. */
.stackoverflow-icon ::after{
background: url('data:image/svg+xml;utf8,<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="24" height="24" fill="grey" viewBox="0 0 24 24"><path d="M17.36,20.2V14.82H19.15V22H3V14.82H4.8V20.2H17.36M6.77,14.32L7.14,12.56L15.93,14.41L15.56,16.17L6.77,14.32M7.93,10.11L8.69,8.5L16.83,12.28L16.07,13.9L7.93,10.11M10.19,6.12L11.34,4.74L18.24,10.5L17.09,11.87L10.19,6.12M14.64,1.87L20,9.08L18.56,10.15L13.2,2.94L14.64,1.87M6.59,18.41V16.61H15.57V18.41H6.59Z" /></svg>');
}
/*
The source of images is used instead of image files for the need to change
the color (and may be other svg values) on hover event. It seems a bit redundant
to duplicate the whole image source just for the case, but only foreground
.images can be changed in color with css `fill' property. Let us know if you
discover simpler way to do it. Otherwise you need to edit .svg file before using
it as a downloadable resourse which is the same what we do here.
See more reasons why the source of the .svg image is better than the link to it:
https://css-tricks.com/probably-dont-base64-svg/
*/
.stackoverflow-icon:hover ::after {
background: url('data:image/svg+xml;utf8,<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="24" height="24" fill="blue" viewBox="0 0 24 24"><path d="M17.36,20.2V14.82H19.15V22H3V14.82H4.8V20.2H17.36M6.77,14.32L7.14,12.56L15.93,14.41L15.56,16.17L6.77,14.32M7.93,10.11L8.69,8.5L16.83,12.28L16.07,13.9L7.93,10.11M10.19,6.12L11.34,4.74L18.24,10.5L17.09,11.87L10.19,6.12M14.64,1.87L20,9.08L18.56,10.15L13.2,2.94L14.64,1.87M6.59,18.41V16.61H15.57V18.41H6.59Z" /></svg>');
}
.github-icon ::after{
background: url('data:image/svg+xml;utf8,<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="24" height="24" fill="grey" viewBox="0 0 24 24"><path d="M12,2A10,10 0 0,0 2,12C2,16.42 4.87,20.17 8.84,21.5C9.34,21.58 9.5,21.27 9.5,21C9.5,20.77 9.5,20.14 9.5,19.31C6.73,19.91 6.14,17.97 6.14,17.97C5.68,16.81 5.03,16.5 5.03,16.5C4.12,15.88 5.1,15.9 5.1,15.9C6.1,15.97 6.63,16.93 6.63,16.93C7.5,18.45 8.97,18 9.54,17.76C9.63,17.11 9.89,16.67 10.17,16.42C7.95,16.17 5.62,15.31 5.62,11.5C5.62,10.39 6,9.5 6.65,8.79C6.55,8.54 6.2,7.5 6.75,6.15C6.75,6.15 7.59,5.88 9.5,7.17C10.29,6.95 11.15,6.84 12,6.84C12.85,6.84 13.71,6.95 14.5,7.17C16.41,5.88 17.25,6.15 17.25,6.15C17.8,7.5 17.45,8.54 17.35,8.79C18,9.5 18.38,10.39 18.38,11.5C18.38,15.32 16.04,16.16 13.81,16.41C14.17,16.72 14.5,17.33 14.5,18.26C14.5,19.6 14.5,20.68 14.5,21C14.5,21.27 14.66,21.59 15.17,21.5C19.14,20.16 22,16.42 22,12A10,10 0 0,0 12,2Z" /></svg>');
}
.github-icon:hover ::after {
background: url('data:image/svg+xml;utf8,<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="24" height="24" fill="blue" viewBox="0 0 24 24"><path d="M12,2A10,10 0 0,0 2,12C2,16.42 4.87,20.17 8.84,21.5C9.34,21.58 9.5,21.27 9.5,21C9.5,20.77 9.5,20.14 9.5,19.31C6.73,19.91 6.14,17.97 6.14,17.97C5.68,16.81 5.03,16.5 5.03,16.5C4.12,15.88 5.1,15.9 5.1,15.9C6.1,15.97 6.63,16.93 6.63,16.93C7.5,18.45 8.97,18 9.54,17.76C9.63,17.11 9.89,16.67 10.17,16.42C7.95,16.17 5.62,15.31 5.62,11.5C5.62,10.39 6,9.5 6.65,8.79C6.55,8.54 6.2,7.5 6.75,6.15C6.75,6.15 7.59,5.88 9.5,7.17C10.29,6.95 11.15,6.84 12,6.84C12.85,6.84 13.71,6.95 14.5,7.17C16.41,5.88 17.25,6.15 17.25,6.15C17.8,7.5 17.45,8.54 17.35,8.79C18,9.5 18.38,10.39 18.38,11.5C18.38,15.32 16.04,16.16 13.81,16.41C14.17,16.72 14.5,17.33 14.5,18.26C14.5,19.6 14.5,20.68 14.5,21C14.5,21.27 14.66,21.59 15.17,21.5C19.14,20.16 22,16.42 22,12A10,10 0 0,0 12,2Z" /></svg>');
}
/* This rule MUST to be placed under all clickable background rules.*/
.clickable-background:hover ::after, .clickable-background ::after{
background-repeat: no-repeat;
background-size: contain;
}
/*******************************************************************************
Even better solution: clickable Google font material icons expessed as ligatures.
See the <link> tag above.
*******************************************************************************/
/* Make clickable text on links invisible. */
.material-icons {
font-size:0;
}
.material-icons a {
text-decoration: none;
}
.material-icons ::after {
font-size: 48px;
color: grey;
/*
The default clickable background image (crossed phone) to display if no
background image is defined or it is crippled or not reachable.
*/
content: 'phonelink_erase';
}
.material-icons:hover ::after {
color: blue;
}
/* Each clickable font icon need its own rule with the name of a ligature as content property value */
.material-icons.clickable-home ::after {
content: 'home';
}
.material-icons.clickable-thumb_up ::after {
content: 'thumb_up';
}
.material-icons.clickable-android ::after {
content: 'android';
}
.material-icons.clickable-important_devices ::after {
content: 'important_devices';
}
.material-icons.clickable-import_contacts ::after {
content: 'import_contacts';
}
.material-icons.clickable-phonelink_setup ::after {
content: 'phonelink_setup';
}
</style>
</head>
<body>
<p>Note that links below do not lead you to the sites linked because in the code snippet the default behaviour of links is disabled by stackoverflow.com. See the browser status bar and cursor type when hover over links. For actual testing just copy the whole snippet and create your own test.html file.</p>
<span class="clickable-background stackoverflow-icon">
<a href="http://stackoverflow.com" title="Stackoverflow" target="_blank">Stackoverflow - sounds good, but the icon is better.</a>
</span>
<span class="clickable-background github-icon">
<a href="https://github.com/" title="Github" target="_blank">Github - sounds good, but the icon is better.</a>
</span>
<p>May be even better solution is to use clickable font symbols. Read more about this cool feature on the links below.</p>
</span>
<span class="material-icons clickable-home">
<a href="http://google.github.io/material-design-icons/" title="Material design icons" target="_blank">Material design icons</a>
</span>
<span class="material-icons clickable-thumb_up">
<a href="https://design.google.com/icons/" title="Download material icons" target="_blank">Download material icons</a>
</span>
<span class="material-icons clickable-android">
<a href="https://developers.google.com/fonts/" title="Google fonts" target="_blank">Google fonts</a>
</span>
<span class="material-icons clickable-important_devices">
<a href="http://alistapart.com/article/the-era-of-symbol-fonts/" title="Symbol fonts" target="_blank">The Era of Symbol Fonts</a>
</span>
<span class="material-icons clickable-import_contacts">
<a href="https://material.google.com/style/icons.html" title="Material icons' geometric shapes" target="_blank">Material icons' geometric shapes</a>
</span>
<span class="material-icons clickable-phonelink_setup">
<a href="https://github.com/google/material-design-icons/blob/master/iconfont/codepoints/" title="Code points reference" target="_blank">Code points reference</a>
</span>
</body>
</html>答案 0 :(得分：11)
Grammatically。 for循环是：
for ( init-statement; conditionopt ; expressionopt ) statement
其中 init-statement 是表达式，后跟;或简单声明。 static_assert-declaration 既不是那些东西，也不能去那里。