数组
3.4.1一维数组
类型符 数组名[常量表达式]
3.4.2多维数组
类型符 数组名[常量表达式] [常量表达式]
3.4.3字符数组
1.字符串连接函数strcat
#include <stdio.h>
int main(){
char str1[]={"STRing"};
char str2[]={"CATenate"};
printf("%s",strcat(str1,str2));
return 0;
}
2.字符串复制函数strcpy与strncpy
#include <stdio.h>
int main(){
char str1[10];
char str2[]={"STRingCopy"};
strcpy(str1,str2);
puts(str1);
printf("\n");
char str3[10];
strncpy(str3,str2,6);
printf("%s",str3);
return 0;
}
3.字符串比较函数strcmp
#include <stdio.h>
int main(){
char str1[]={"STRing CoMPare"};
char str2[]={"STRing CoMPare"};
printf("%d",strcmp(str1,str2));
return 0;
}
4.字符串长度函数strlen
#include <stdio.h>
int main(){
char str[]={"STRing LENgth"};
printf("%d",strlen(str));
return 0;
}
5.字符串内大小写转换函数strlwr与strupr
#include <stdio.h>
int main(){
char str1[]={"STRing LoWeRcase"};
char str2[]={"STRing UPpeRcase"};
printf("%s\n",str1);
printf("%s\n",strlwr(str1));
printf("%s\n",str2);
printf("%s\n",strupr(str2));
return 0;
}