c语言怎么只输出前4位
在编写输出函数的时候用一个字符串接收一串数字，然后输出其前4位就可以了。绛旓細long num,temp;int count=0,leap,i,*p;scanf("%ld",&num);temp=num;while(num){ num/=10;count++;} leap=count;p=(int*)malloc(sizeof(int)*count);while(temp){ p[--count]=temp%10;temp/=10;} for(i=1;i<leap;i++)printf("%d",p[i]);return 0;} 娴嬭瘯杈撳叆456789锛杈撳嚭...
绛旓細鍦–鐨勭紪绋嬩腑锛屾讳細閬囧埌娴偣鏁扮殑澶勭悊锛屾湁鐨勬椂鍊欙紝鎴戜滑鍙渶瑕佷繚鐣2浣嶅皬鏁颁綔涓杈撳嚭鐨勭粨鏋滐紝杩欐椂鍊欙紝闂鏉ヤ簡锛屾庢牱鎵嶈兘璁ヽout杈撳嚭鎸囧畾鐨勫皬鏁扮偣鍚庝繚鐣欎綅鏁板憿锛熷湪C璇█鐨勭紪绋嬩腑锛屾垜浠彲浠ヨ繖鏍峰疄鐜板畠锛歔cpp] view plain copy printf("%.2f", sample);鍦–++涓紝鏄病鏈夋牸寮忕鐨勶紝鎴戜滑鍙互閫氳繃浣跨敤setprecision...
绛旓細濡傛灉浠涔堥兘涓嶈冭檻(4浣嶆暟锛1000~9999)锛岃繖鏍峰氨琛屼簡鍚э細(int) ((float) rand() / RAND_MAX * (9999 - 1000 + 1)) + 1000 鎭╋紝杩樻槸鍔熷か涓嶅埌瀹讹紝杩欎釜濂斤細srand((unsigned)time(NULL)); //浜х敓闅忔満鏁扮瀛 printf("%d\n",rand()%9000+1000); //杈撳嚭闅忔満鏁 ...
绛旓細鍦C璇█涓锛屽畠鐨勬暟鎹搴︽槸浠庡彸杈瑰紑濮嬬畻璧风殑銆傞偅涔4d灏辫〃绀哄畠鐨勬暟鎹搴︿负4锛屽鏋滀笉澶熺殑璇濆彲浠ョ敤绌烘牸鏉ヨˉ鍏咃紝濡傛灉瓒呭嚭鍥涗綅锛岄偅涔堝氨鎸夌収鍘熸潵鐨勮繘琛杈撳嚭銆c璇█鏄竴闂ㄩ潰鍚戣繃绋嬨佹娊璞″寲鐨勯氱敤绋嬪簭璁捐璇█锛屽箍娉涘簲鐢ㄤ簬搴曞眰寮鍙戙侰璇█鍏锋湁楂樻晥銆佺伒娲汇佸姛鑳戒赴瀵屻佽〃杈惧姏寮哄拰杈冮珮鐨勫彲绉绘鎬х瓑鐗圭偣锛屽湪绋嬪簭...
绛旓細include<iostream> using namespace std;int main(){ double a=196.546459;cout.setf(ios::fixed);cout<
绛旓細include<stdio.h>#include<stdlib.h>void c(void){ char ch; while((ch=getchar())!='\n'&&ch!=EOF);}int main(){ int num; while(1) { while(1) { printf("input a number of 8 bit:"); scanf("%d",&num); c(); if(num<10000000||num...
绛旓細灏辨槸鎶婃枃浠鍓嶅洓浣鐨勫ぇ鍐欏瓧姣嶆敼鍐欎负灏忓啓瀛楁瘝锛熷叏閮ㄨ鍏ュ唴瀛 淇敼 鍓嶅洓浣 鍐欏叆鏂囦欢
绛旓細渚嬪锛屽湪涓嬮潰鐨勭ず渚嬩腑锛屾垜浠皢涓涓诞鐐规暟鍙橀噺d鐨勫杈撳嚭涓00.00锛歚``c include <stdio.h> int main() { float d = 0.0;printf("%05.2f\n", d);return 0;} ```杈撳嚭缁撴灉涓猴細```00.00 ```娉ㄦ剰鍒拌繖閲岀殑杈撳嚭缁撴灉涓紝灏忔暟鐐鍓嶉潰鏈変袱涓0锛屽皬鏁扮偣鍚庨潰鏈変袱涓0锛屽叡璁5涓瓧绗︼紝绗﹀悎涓婅堪...
绛旓細include <stdio.h>int main(void) {int n;scanf("%d", &n);printf("%d\n", (n>>3) & 1); //鍙崇Щ3浣嶏紝鍐嶄笌1杩涜&杩愮畻銆俽eturn 0;}
绛旓細鍙傝冧唬鐮佸涓嬶細include <stdio.h>int main(){ char a[5];// 瀛樻斁鍥浣嶆暟鐨勬暟缁勩 int i; scanf("%s",a);//杈撳叆鍥涗綅鏁般 for(i = 0; i < 3; i ++) printf("%c ", a[i]);//杈撳嚭鍓涓変綅锛屾瘡浣嶅悗闈㈠姞涓涓┖鏍笺 printf("%c\n", a[3]);//杈撳嚭鏈鍚庝竴浣嶅苟...
