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- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <ctype.h>
- int main()
- {
- char p[101];
- int i,m=0;
- scanf("%s",p);
- for(i=0 ; i < strlen(p) ; i++){
- if(isupper(p[i])){
- m++;
- }
- if(m == strlen(p)){
- for(i = 0 ; i < strlen(p) ; i++){
- p[i] = tolower(p[i]);
- }
- printf("%s\n",p);
- }
- else if(m == strlen(p)-1){
- for(i = 1 ; i < strlen(p) ; i++){
- p[i] = tolower(p[i]);
- p[0] = toupper(p[0]);
- }
- printf("%s\n",p);
- }
- }
- return 0;
- }
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