nclude

*)malloc(strlen(num11));if(num2

NULL){printf(内存开辟失败);return;}strcpy(num2,num1);printf(%s\n,num2);if(num2

NULL;}}

world;strcat(str01,str02);printf(%s\n,str01);

4.字符串比较函数

*)malloc(strlen(str01)1);strcpy(str02,str01);str01[0]

H;strcmp(str01,str02);printf(str02

%s\n,str02);

strncmp(str01,str02,6);printf(x

%d\n,w);

strstr(str,cde);printf(%ld\n,p1-str);

6.字符串匹配函数

strchr(str01,l);printf(%p\n,pl);if(pl

NULL){printf(%c\n,*pl);printf(%d\n,pl-str01);}

7.字符串转换数值

sprintf(buf,%d:%d:%d,2013,10,1);

void

...)//参数://s:写入的内存的首地址//format:格式化语句//值char

str[100];sprintf(str,%d年%d月%d日,2023,11,6);printf(%s\n,str);

int

s[3];sscanf(str,%3d%c%s,num,c,s);printf(%d\n,num);printf(%c\n,c);printf(%c\n,*s);

}sscanf

0;sscanf(str,%*2d%2d,num);printf(%d\n,num);

、支持集合操作只支持获取字符串

p[100];sscanf(str,%[a-z],p);printf(%s\n,p);

void

p[100];sscanf(str,%*[a-z]%[^a-z],p);printf(%s\n,p);

void

p[100];sscanf(str,%[aBc],p);printf(%s\n,p);}

10.const