xxC語(yǔ)言筆試題及答案

答：extern答：和while(1)相同。5、do{inta,b,c,d;printf("b，c，d：%d，%d，%d"，b，c，d);return0;}typedefunion{longi;intk[5];charc;}DATE;structdata{intcat;DATEcow;doubledog;}too;那么語(yǔ)句printf("%d",sizeof(structdate)+sizeof(max));data是一個(gè)struct,每個(gè)變量分開(kāi)占用空間.依次為int4int2+DATE10+double8=20intinc(inta){return(++a);}intmulti(int*a,int*b,int*c){return(*c=*a**b);}typedefint(FUNC1)(intin);typedefint(FUNC2)(int*,int*,int*);voidshow(FUNC2fun,intarg1,int*arg2){inttemp=p(arg1);fun(&temp,&arg1,arg2);printf("%d\n",*arg2);}{inta;show(multi,10,&a);return0;}"dcba"1、#include"string.h"2、main()3、{4、char*src="hello,world";6、intlen=strlen(src);7、dest=(char*)malloc(len);8、char*d=dest;9、char*s=src[len];10、while(len--!=0)11、d++=s--;12、printf("%s",dest);13、return0;intmain(){char*src="hello,world";intlen=strlen(src);char*dest=(char*)malloc(len+1);//要為\0分配一個(gè)空間char*d=dest;while(len--!=0)*d++=*s--;printf("%s\n",dest);return0;}{charstr[]="hello,world";intlen=strlen(str);chart;for(inti=0;i{t=str[i];str[i]=str[len-i-1];str[len-i-1]=t;}printf("%s",str);return0;}15。enumstring{}x;16。unsignedchar*p1;unsignedlong*p2;p1=(unsignedchar*)0x801000;p2=(unsignedlong*)0x810000;inta[60][250][1000],i,j,k;for(j=0;j<250;j++)for(i=0;i<60;i++)a[i][j][k]=0;#defineSQUARE(a)((a)*