C语言读程序写结果练习题

读程序写结果

一、数组

1． #include

void main() { }

2． #include

void main() {

float b[6]={1.1,2.2,3.3,4.4,5.5,6.6},t; int i; t=b[0];

for(i=0;i<5;i++)

b[i]=b[i+1]; b[5]=t;

for(i=0;i<6;i++)

printf(“%6.2f”,b[i]);

} void main()

{ int p[7]={11,13,14,15,16,17,18},i=0,k=0;

while(i<7 && p[i]%2) { k=k+p[i]; i++;} printf(\

}

4． void main()

{int a[3][3]={1,3,5,7,9,11,13,15,17}; int sum=0,i,j; for (i=0;i<3;i++) for (j=0;j<3;j++) {a[i][j]=i+j;

int a[8]={1,0,1,0,1,0,1,0},i; for(i=2;i<8;i++)

a[i]+= a[i-1] + a[i-2]; printf(“]”,a[i]); for(i=0;i<8;i++)

3． #include

if (i==j)

sum=sum+a[i][j];

}

printf(\}

5． void main() {int a[4][4],i,j,k; for (i=0;i<4;i++) for (j=0;j<4;j++) a[i][j]=i-j; for (i=0;i<4;i++) { for (j=0;j<=i;j++) printf(\printf(\} }

6． #include main() {inti,s;

char s1[100],s2[100];

printf(\printf(\i=0;

while ((s1[i]==s2[i])&&(s1[i]!='\\0')) i++;

if ((s1[i]=='\\0')&&(s2[i]=='\\0')) s=0; else s=s1[i]-s2[i]; printf(\}

输入数据 aid

and

7． void main()

{

}

charch[3][5]={ \printf(\

1． 1 0 2 2 5 7 13 20 2． 2.20 3.30 4.40 5.50 6.60 1.10 3． k=24 4． sum=6 5．

0

1 0 2 1 0 3 2 1 0 6． -5 7． “BBB”

二、指针

1、

charcchar(char ch)

{ if (ch>=‘A’&&ch<=‘Z')

ch=ch-‘A'+‘a';

returnch; }

voidmain()

{ char s[]=\while(*p) { *p=cchar(*p); p++; }

printf(\}

2、

voidmain()

{int a[5]={2,4,6,8,10},*p,* *k; p=a; k=&p;

printf(\printf(\}

3、

funa(inta,int b ) { return a+b;} funb(inta,int b ) { return a-b;} sub(int(*t)(),intx,int y )

{ return((*t)(x,y));} voidmain() { int x ,(*p)(); p=funa; x=sub(p,9,3); x+=sub(funb,8,3); printf(\}

4、

voidmain()

{ char *s=\int v[4]={0,0,0,0} ;

intk,i;

for(k=0;s[k];k++) { switch(s[k]) { case '1':i=0; case '2':i=1; case '3':i=2; case '4':i=3; } v[i]++; }

for(k=0;k<4;k++)printf(\}

5、# include \

void space(char *str) { int i ,t ; charts[81];

for(i=0,t=0 ;str[i]!='\\0' ;i+=2) if(! isspace(*(str+i))&&(*(str+i)!='a')) ts[t++]=toupper(str[i]); ts[t]='\\0' ;strcpy(str,ts); }

voidmain()

{ char s[81]={\