c_sample100.htm

一百个精典的C语言程序代码,有需要的可以下.

function f_trim(inputString) {
    if (typeof inputString != 'string') { return inputString; }
    var retValue = inputString;
    var ch = retValue.substring(0, 1);
    while (ch == ' ' || ch == '\r' || ch == '\n') {
   retValue = retValue.substring(1, retValue.length);
   ch = retValue.substring(0, 1);
    }
    ch = retValue.substring(retValue.length-1, retValue.length);
    while (ch == ' ' || ch == '\r' || ch == '\n') {
   retValue = retValue.substring(0, retValue.length-1);
   ch = retValue.substring(retValue.length-1, retValue.length);
    }
    while (retValue.indexOf('  ') != -1) {
   retValue = retValue.substring(0, retValue.indexOf('  ')) + 
      retValue.substring(retValue.indexOf('  ')+1, retValue.length); 
    }
    return retValue; 
} 


function f_check() {
 ls_title = document.post.ti.value;
 ls_content = document.post.co.value;
 
 document.post.ti.value=f_trim(ls_title);
 document.post.co.value=f_trim(ls_content);
 
 if(document.post.ti.value == document.post.ti1.value && document.post.co.value.length < 1)
 {
    alert("不允许发布空贴");
    return false;
 }
 
 if(document.post.ti.value == '' || document.post.ti.value == null)
 {
   alert("标题不能为空");
    return false;  
   
 }
 
 if(document.post.co.value == '' || document.post.co.value == null)
 {
   alert("内容不能为空");
    return false;  
 }
 
 
 if(need_verify==10){
  if(document.post.word1.value == '' || document.post.word1.value == null)
   {
     alert("验证码不能为空，请输入验证码");
     return false;  
   }
 }  
 
 
  
 
 document.post.str2.value = fr_as_js_tr();
  
  return true;
 
}
url=f_escape(window.location.href);
function ResetReplyTitle(no, title) {
        if(no == null||no == ""){
          if(title == null || title == '')
            title_src = '100个经典C语言程序，大家可以进来看看。';
          else
            title_src = title;
        }
        else{
          title_src = title;
          var s = title_src.indexOf("：");
          title_src = title_src.substring(s+1,title.length);
        }
        
        document.forms('post').ti.value='回复 ' + no + '：' + title_src;
        document.forms('post').ti1.value='回复 ' + no + '：' + title_src;
 
        return true;
 
}
function h(obj,url){
obj.style.behavior='url(#default#homepage)';
obj.setHomePage(url);
}

function getLeftChars(varField,limit_len) {
    var i = 0;
    var counter = 0;
    var cap = limit_len;    
    var j=0;
    for (i = 0; i< varField.value.length; i++) {     
     if (varField.value.charCodeAt(i) > 127 || varField.value.charCodeAt(i) == 94) {
        j=j+2;  
        } 
     else {
        j=j+1
     }   
    }  //结束FOR循环
    //var leftchars = cap - varField.value.length;    
    var leftchars = cap - j;    
    return (leftchars);
}

function onCharsChange(varField,a_str,a_limit) {
    var leftChars = getLeftChars(varField,a_limit);
    if ( leftChars >= 0) {   
   return true;
    } else {
      ls_str = a_str + "超过字数限制!";
      window.alert(ls_str);
      //var len = document.thform.ti.value.length + leftChars;  
      //document.login.message.value = document.login.ti.value.substring(0, len);
      varField.value=""
      return false;     
    } 
}

function f_GoPage(form){
  form.rs6.value = f_trim(form.rs6.value);
  if(isNaN(form.rs6.value)|| form.rs6.value=="" || form.rs6.length==0){ alert('请输入一个数字或者不能为空！');return false; }
  if(form.rs6.value > 2) {
     form.pn.value = (2 - 1)*50 
     return true;
  }
  if(form.rs6.value <= 0) {form.pn.value = 0 ; return true;}
  form.pn.value = (form.rs6.value - 1)*50
  return true;
}