【文章內(nèi)容簡(jiǎn)介】 r(i=0。iN。i++){for(j=0。jN。j++){printf(%4d,a[i][j])。}printf(\n\n)。}}78include iostreamvoid main(){int a[4][4],i,j,max,min,k1,k2,flag。printf(輸入一個(gè)4*4的數(shù)組\n\n)。for(i=0。i4。i++){for(j=0。j4。j++){scanf(%d,amp。a[i][j])。}}printf(鞍點(diǎn)為：\n\n)。for(i=0。i4。i++){max=a[i][0]。for(j=0。j4。j++){if(max=a[i][j]){max=a[i][j]。k1=j。}}min=a[0][k1]。for(j=0。j4。j++){if(min=a[j][k1]){min=a[j][k1]。k2=j。}}if((max!=min)) flag=0。else{flag=1。printf(%d\n,max)。break。}}if(flag==0) printf(不存在\n\n)。}79include iostreamvoid main(){float a[15]={100,98,65,55,34,23,23,12,11,9,7,6,4,3,2},n。int i,low,high,mid。printf(原數(shù)組為：\n\n)。for(i=0。i15。i++){printf(%,a[i])。}printf(\n\n輸入一個(gè)數(shù)n\n\n)。scanf(%f,amp。n)。low=0。high=14。i=0。while(low=high){mid=(low+high)/2。if(a[mid]==n){printf(該數(shù)是數(shù)組中第%d個(gè)元素\n\n,mid+1)。i++。break。}else if(a[mid]n) high=mid1。else low=mid+1。}if(i==0) printf(無(wú)此數(shù)!!\n\n)。}710include iostreamvoid main(){char a[3][80]。int i,j,upon=0,low=0,num=0,spa=0,oth=0。for(i=0。i3。i++){printf(輸入第%d行文字\n\n,i)。gets(a[i])。for(j=0。j80amp。amp。a[i][j]!=39。\039。j++){if(a[i][j]=39。A39。amp。amp。a[i][j]=39。Z39。) upon+=1。else if(a[i][j]=39。a39。amp。amp。a[i][j]=39。z39。) low+=1。else if(a[i][j]=48amp。amp。a[i][j]=57) num+=1。else if(a[i][j]==39。 39。) spa+=1。else oth+=1。}}printf(英文大寫字母：%d個(gè)\n\n,upon)。printf(英文小寫字母：%d個(gè)\n\n,low)。printf(數(shù)字： %d個(gè)\n\n,num)。printf(空格： %d個(gè)\n\n,spa)。printf(其他字符： %d個(gè)\n\n,oth)。}711include iostreamvoid main(){int i,j。for(i=0。i5。i++){for(j=0。j=i。j++){printf( )。}for(j=i。ji+5。j++){printf(* )。}printf(\n)。}}712include iostreamvoid main(){char a[80],b[80]。int i,j。printf(輸入密碼\n\n)。gets(a)。for(i=0。i80amp。amp。a[i]!=39。\039。i++){if((a[i]=39。A39。)amp。amp。(a[i]=39。Z39。)){b[i]=155a[i]。}else if((a[i]=39。a39。)amp。amp。(a[i]=39。z39。)){b[i]=219a[i]。}else b[i]=a[i]。}b[i]=39。\039。printf(密文為：\n\n)。puts(a)。printf(原文為：\n\n)。puts(b)。}713include iostreamvoid main(){char a[80],b[80]。int i,j,k。printf(輸入第1個(gè)字符串\n\n)。gets(a)。printf(輸入第2個(gè)字符串\n\n)。gets(b)。for(i=0。i80。i++){if(a[i]==39。\039。){k=i。for(j=0。j80amp。amp。b[j]!=39。\039。j++){a[k]=b[j]。k++。}a[k]=39。\039。break。}}printf(連接后字符串為：\n\n)。puts(a)。}714include iostreamvoid main(){char a[80],b[80]。int i,j,k。printf(輸入第1個(gè)字符串\n\n)。gets(a)。printf(輸入第2個(gè)字符串\n\n)。gets(b)。for(i=0。(i80)amp。amp。(a[i]!=39。\039。)amp。amp。(b[i]!=39。\039。)。i++){k=a[i]b[i]。if(k0){printf(\n\n字符串a(chǎn)大于字符串b：%4d\n\n,k)。break。}else if(k0){printf(\n\n字符串a(chǎn)小于字符串b：%4d\n\n,k)。break。}else k=0。}if(k==0) printf(\n\n字符串a(chǎn)等于字符串b：%4d\n\n,k)。}715include iostreamvoid main(){char s1[80],s2[80]。int i,j。printf(輸入數(shù)組s1\n\n)。gets(s1)。printf(輸入數(shù)組s2\n\n)。gets(s2)。for(i=0。i80amp。amp。s2[i]!=39。\039。i++){s1[i]=s2[i]。}s1[i]=39。\039。printf(\n\n復(fù)制后的數(shù)組為：\n\n)。puts(s1)。}第八章81include iostreamvoid main(){int max_div(int,int)。int min_mul(int,int)。int m,n。printf(輸入兩個(gè)整數(shù)\n\n)。scanf(%d%d,amp。m,amp。n)。if(max_div(m,n)==0) printf(\n\n無(wú)最大公約數(shù)為\n\n)。else printf(\n\n最大公倍數(shù)為：%d\n\n,max_div(m,n))。printf(\n\n最大公倍數(shù)為：%d\n\n,min_mul(m,n))。}int max_div(int k1,int k2){int min(int,int)。int i,k,flag。k=min(k1,k2)。for(i=k。i1。i){if((k1%i==0)amp。amp。(k2%i==0)){return(i)。flag=1。break。}else flag=0。}if(flag==0) return(0)。}int min_mul(int k1,int k2){int max(int,int)。int i,k。k=max(k1,k2)。for(i=k。i++){if((i%k1==0)amp。amp。(i%k2==0)){return(i)。break。}}}int min(int k1,int k2){int min。min=k1。if(k1k2) min=k2。return(min)。}int max(int k1,int k2){int max。max=k1。if(k1k2) max=k2。return(max)。}82include iostreaminclude void main(){void root1(float,float,float)。void root2(float,float,float)。void root3(float,float,float)。float a,b,c,k。printf(輸入a,b,c的值\n\n)。scanf(%f%f%f,amp。a,amp。b,amp。c)。k=b*b4*a*c。if(k0) root1(a,b,c)。else if(k==0) root2(a,b,c)。else root3(a,b,c)。}void root1(float a,float b,float c){float p,q。p=b/(2*a)。q=sqrt(b*b4*a*c)/(2*a)。printf(\n\n方程的兩個(gè)根為：x1=%,x2=%\n\n,p+q,pq)。}void root2(float a,float b,float c){float p。p=b/(2*a)。printf(\n\n方程的兩個(gè)根為：x1=x2=%\n\n,p)。}void root3(float a,float b,float c){float p,q。p=b/(2*a)。q=sqrt(b*b+4*a*c)/(2*a)。printf(\n\n方程的兩個(gè)根為：x1=%+%,x2=%%\n\n,p,q,p,q)。}83include iostreamvoid main(){int prime(int)。int x。printf(輸入一個(gè)正整數(shù)\n\n)。scanf(%d,amp。x)。if(prime(x)==0) printf(\n\n此數(shù)為素?cái)?shù)\n\n)。else printf(\n\n此數(shù)不是素?cái)?shù)\n\n)。}int prime(int x){int i,flag。for(i=2。ix。i++){if(x%i==0){flag=1。break。}else flag=0。}return(flag)。}84include iostreamvoid main(){void exchange(int a[3][3])。int a[3][3],i,j。printf(輸入一個(gè)3*3的矩陣\n\n)。for(i=0。i3。i++){for(j=0。j3。j++){scanf(%d,amp。a[i][j])。}}exchange(a)。printf(\n\n轉(zhuǎn)置后的矩陣為：\n\n)。for(i=0。i3。i++){for(j=0。j3。j++){printf(%d ,a[i][j])。}printf(\n)。}}85include iostreamvoid main(){void exchange(char str[])。char str[80]。printf(輸入一個(gè)字符串\n\n)。gets(str)。exchange(str)。printf(\n\n反序字符串為：\n\n)。puts(str)。}void exchange(char str[]){int i,j,k。char temp。for(i=0。i++){if(str[i]==39。\039。) break。}k=i/2。160