1、#includeint substring(char *s,char *t);int main()char s50;char t20;int num;scanf(“%s%s“,s,t);num=substring(s,t);printf(“%dn“,num);return 0;int substring(char *s,char *t)char *st=s;char *tt=t;int num=0;int offset=0;for(;*st!=0;)offset=0;for(;*tt!=0;)if(*st=*tt)st+,tt+,offset+;elsebreak;if(*tt=0)num+;
2、elsest=st-offset+1;tt=t;return num;#includevoid change(char *s);void insert(char *s);int main()char s100;scanf(“%s“,s);change(s);insert(s);printf(“%sn“,s);return 0;void change(char *s)for(;*s!=0;s+)if(*s)Aint main()char s50;int num;scanf(“%s“,s);num=replace(s);printf(“替换之后 s 为：%sn“,s);printf(“总共替换了：
3、%d 个字符n“,num);return 0;int replace(char *s)int num=0;for(;*s!=0;s+)if(*s=t)*s=e,num+;if(*s=T)*s=E,num+;return num; #includeint main()char *weeks7=“monday“,“tuesday“,“wednesday“,“tuesday“,“friday“,“saturday“,“sunday“;int num;scanf(“%d“,while(num!=0)if(num7|numvoid swap(int *a,int *b);void main()char
4、*str5=“dfefs“,“dds“,“fdse“,“as“,“a“;char *result5= , , , , ;int len5,i,j;char newstr6;for(i=0;ilenj)swap(for(i=0;i5;i+)for(j=0;j5;j+)if(strlen(strj)=lenifor(i=0;i5;i+)printf(“%sn“,resulti);printf(“n“);for(i=0;i5;+i)if(leni3)newstri=“ “;elsenewstri=resulti2;newstri=0;printf(“%sn“,newstr);void swap(int *a,int *b)int temp=*a;*a=*b;*b=temp;
