1、學(xué)生實(shí)驗(yàn)報(bào)告學(xué)號(hào) : 日期 : 2014-06-22系別計(jì)算機(jī)科學(xué)與技術(shù)專業(yè)計(jì)算機(jī)科學(xué)與技術(shù)（師）班級(jí)姓 名課程名稱程序設(shè)計(jì)基礎(chǔ)課程類型專業(yè)課 學(xué)時(shí)數(shù)2實(shí)驗(yàn)名稱 函數(shù)實(shí)驗(yàn)?zāi)康模赫莆誄語(yǔ)言函數(shù)的定義與調(diào)用方法；理解C語(yǔ)言函數(shù)的調(diào)用過(guò)程；學(xué)會(huì)編寫函數(shù)構(gòu)造程序.。實(shí)驗(yàn)要求：實(shí)驗(yàn)后寫實(shí)驗(yàn)報(bào)告。1. 實(shí)驗(yàn)內(nèi)容：. 閱讀下列程序并執(zhí)行，理解程序的功能并記錄程序運(yùn)行結(jié)果#include "stdio.h"int x,y;void num()int a = 15,b = 10;x = a - b;y = a + b;void main()int a = 7,b = 5;x = a + b;

2、y = a - b;num();1 / 18printf("%d,%dn",x,y);運(yùn)行結(jié)果：2、閱讀下面程序并執(zhí)行，理解程序并記錄程序運(yùn)行結(jié)果#include "stdio.h"void main() int a=2,i; for (i=0;i<3;i+)printf("%4d",f(a);f(int a) int b=0; int c=3; b+; c+; return(a+b+c);運(yùn)行結(jié)果：3、 調(diào)試運(yùn)行教材146頁(yè)-156頁(yè)例7.1-例7.3頁(yè)程序，理解并掌握程序改進(jìn)所采用的程序設(shè)計(jì)技術(shù)。7.1題#include &

3、quot;stdio.h"/*函數(shù)功能：用迭代法計(jì)算n!*/long Fact (int n)int i;long result=1;for(i=2;i<=n;i+)result*=i;return result;int main()int m;long ret;printf("Input m:");scanf("%d",&m);ret=Fact(m);printf("%d!=%ldn",m,ret);return 0;運(yùn)行結(jié)果：7.2題#include "stdio.h"long Fact

4、(int n);int main()int m;long ret;printf("Input m:");scanf("%d",&m);ret=Fact(m);if (ret=-1)printf("Input date error!n");elseprintf("%d!=%ldn",m,ret);return 0;/*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*/long Fact(int n)int i;long result=1;if (n<0)return-1;el

5、sefor (i=2;i<=n;i+)result*=i;return result;運(yùn)行結(jié)果：7.3題#include "stdio.h"unsigned long Fact(unsigned int n);int main()int m;do printf("Input m(m>0):"); scanf("%d",&m);while (m<0); /*增加對(duì)輸入數(shù)據(jù)的限制，確保輸入的數(shù)據(jù)未無(wú)符號(hào)整數(shù)*/printf("%d!=%lun",m,Fact(m);/*無(wú)符號(hào)長(zhǎng)整形格式輸出階乘

6、值*/return 0;/*函數(shù)功能：用迭代法計(jì)算無(wú)符號(hào)整型變量n的階乘*/unsigned long Fact(unsigned int n)unsigned int i;unsigned long result=1;for (i=2;i<=n;i+)result*=i;return result;運(yùn)行結(jié)果;4、編程設(shè)計(jì)教材186頁(yè)7.7題（1）、（2），并在VCC+環(huán)境下運(yùn)行.7.7(1) 窮舉法：源程序#include "stdio.h"int Gcd(int a,int b); /*函數(shù)聲明*/int main()int a,b,t;printf("

7、Input two numbersn:");scanf("%d,%d",&a,&b); printf("%dn",Gcd(a,b); /*調(diào)用函數(shù)*/*計(jì)算量個(gè)正整數(shù)的最大公約數(shù)*/int Gcd(int a,int b)int t,c;if(a<b)c=a;elsec=b;for (t=c;t-) /*最大數(shù)不會(huì)比這兩個(gè)數(shù)的最小值大*/ a%t=0; b%t=0; if(a%t=0&&b%t=0) return t;在VCC+環(huán)境下運(yùn)行:運(yùn)行結(jié)果：(2) 歐幾里得算法#include "stdi

8、o.h"int Gcd(int a,int b); /*函數(shù)聲明*/int main()int a,b;printf("Input two numbers(a>b):");scanf("%d,%d",&a,&b);do printf("Error!n"); printf("Input two numbers(a>b):"); scanf("%d,%d",&a,&b);while(a<=0|b<=0|a<b); printf("%dn",Gcd(a,b); /*調(diào)用函數(shù)*/*函數(shù)功能：計(jì)算量個(gè)正整數(shù)的最大公約數(shù)*/int Gcd(int a,int b)int r; int c;r=a%b;if(r=0)return b;elsewhile(r!=0)c=b; /*保存當(dāng)前的除數(shù)*/b=r; /*將當(dāng)前的余數(shù)復(fù)制給下一次運(yùn)算的除數(shù)*/a=c; /*將當(dāng)前的除數(shù)福中給下一次運(yùn)算的被除數(shù)*/r=a%b; /*記錄當(dāng)前的余數(shù)*/return b; /*輸出兩數(shù)的最大公約數(shù)*/在VCC+