C語言實(shí)驗(yàn)報(bào)告-函數(shù)

C語言實(shí)驗(yàn)報(bào)告—函數(shù)C語言實(shí)驗(yàn)報(bào)告—函數(shù)15/15C語言實(shí)驗(yàn)報(bào)告—函數(shù)優(yōu)選文檔學(xué)生實(shí)驗(yàn)報(bào)告學(xué)號:日期:2014-06-22系別計(jì)算機(jī)科專業(yè)計(jì)算機(jī)科學(xué)班級姓名學(xué)與技術(shù)與技術(shù)（師）課程程序設(shè)計(jì)基礎(chǔ)課程專業(yè)課學(xué)時(shí)數(shù)2名稱種類實(shí)驗(yàn)函數(shù)名稱實(shí)驗(yàn)?zāi)康模赫莆誄語言函數(shù)的定義與調(diào)用方法；理解C語言函數(shù)的調(diào)用過程；學(xué)會編寫函數(shù)結(jié)構(gòu)程序.。實(shí)驗(yàn)要求：實(shí)驗(yàn)后寫實(shí)驗(yàn)報(bào)告。實(shí)驗(yàn)內(nèi)容：１.閱讀以下程序并履行，理解程序的功能并記錄程序運(yùn)行結(jié)果#include"stdio.h"intx,y;voidnum(){inta=15,b=10;x=a-b;y=a+b;}voidmain(){inta=7,b=5;x=a+b;y=a-b;num();printf("%d,%d\n",x,y);.優(yōu)選文檔}運(yùn)行結(jié)果：2、閱讀下面程序并履行，理解程序并記錄程序運(yùn)行結(jié)果#include"stdio.h"voidmain(){inta=2,i;for(i=0;i<3;i++)printf("%4d",f(a));}f(inta){.優(yōu)選文檔intb=0;intc=3;b++;c++;return(a+b+c);}運(yùn)行結(jié)果：3、調(diào)試運(yùn)行教材146頁-156頁例7.1-例7.3頁程序，理解并掌握程序改良所采用的程序設(shè)計(jì)技術(shù)。7.1題.優(yōu)選文檔#include"stdio.h"/*函數(shù)功能：用迭代法計(jì)算n!*/longFact(intn){inti;longresult=1;for(i=2;i<=n;i++){result*=i;}returnresult;}intmain(){intm;longret;printf("Inputm:");scanf("%d",&m);ret=Fact(m);printf("%d!=%ld\n",m,ret);return0;.優(yōu)選文檔}運(yùn)行結(jié)果：7.2題#include"stdio.h"longFact(intn);intmain(){intm;.優(yōu)選文檔longret;printf("Inputm:");scanf("%d",&m);ret=Fact(m);if(ret==-1)printf("Inputdateerror!\n");elseprintf("%d!=%ld\n",m,ret);return0;}/*函數(shù)功能：用迭代法計(jì)算n!當(dāng)你n>=0時(shí)，返回n!的值；否則返回-1*/longFact(intn){inti;longresult=1;if(n<0){return-1;}else{for(i=2;i<=n;i++).優(yōu)選文檔result*=i;returnresult;}}運(yùn)行結(jié)果：7.3題#include"stdio.h".優(yōu)選文檔unsignedlongFact(unsignedintn);intmain(){intm;do{printf("Inputm(m>0):");scanf("%d",&m);}while(m<0);/*增加對輸入數(shù)據(jù)的限制，保證輸入的數(shù)據(jù)未無符號整數(shù)*/printf("%d!=%lu\n",m,Fact(m));/*無符號長整形格式輸出階乘值*/return0;}/*函數(shù)功能：用迭代法計(jì)算無符號整型變量n的階乘*/unsignedlongFact(unsignedintn){unsignedinti;unsignedlongresult=1;for(i=2;i<=n;i++)result*=i;returnresult;}.優(yōu)選文檔運(yùn)行結(jié)果;4、編程設(shè)計(jì)教材186頁7.7題（1）、（2），并在VCC++環(huán)境下運(yùn)行.7.7窮舉法：源程序#include"stdio.h"intGcd(inta,intb);/*函數(shù)聲明*/intmain(){.優(yōu)選文檔inta,b,t;printf("Inputtwonumbers\n:");scanf("%d,%d",&a,&b);printf("%d\n",Gcd(a,b));/*調(diào)用函數(shù)*/}/*計(jì)算量個(gè)正整數(shù)的最大合約數(shù)*/intGcd(inta,intb){intt,c;if(a<b){c=a;}else{c=b;}for(t=c;;t--)/*最大數(shù)不會比這兩個(gè)數(shù)的最小值大*/{a%t==0;b%t==0;.優(yōu)選文檔if(a%t==0&&b%t==0)returnt;}}在VCC++環(huán)境下運(yùn)行:運(yùn)行結(jié)果：歐幾里得算法.優(yōu)選文檔#include"stdio.h"intGcd(inta,intb);/*函數(shù)聲明*/intmain(){inta,b;printf("Inputtwonumbers(a>b):");scanf("%d,%d",&a,&b);do{printf("Error!\n");printf("Inputtwonumbers(a>b):");scanf("%d,%d",&a,&b);}while(a<=0||b<=0||a<b);printf("%d\n",Gcd(a,b));/*調(diào)用函數(shù)*/}/*函數(shù)功能：計(jì)算量個(gè)正整數(shù)的最大合約數(shù)*/intGcd(inta,intb){intr;intc;.優(yōu)選文檔r=a%b;if(r==0)returnb;elsewhile(r!=0){c=b;/*保留目前的除數(shù)*/b=r;/*將目前的余數(shù)復(fù)制給下一次運(yùn)算的除數(shù)*/a=c;/*將目前的除數(shù)福中給下一次運(yùn)算的被除數(shù)*/r=a%b;/*記錄目前的余數(shù)*/}returnb;/*輸出兩數(shù)的最大合約數(shù)*/}在VCC++環(huán)境下運(yùn)行;.優(yōu)選文檔.優(yōu)選文檔實(shí)驗(yàn)總結(jié):經(jīng)過本節(jié)實(shí)驗(yàn)