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- #include<stdio.h>
- #include <stdlib.h>
- int main(void){
- int pass = 0;
- int fail = 0;
- double counter = 0;
- int result = 0;
- double rate = 0;
- while(result != -1){
- printf("Enter result(1=pass,2=fail,-1=end)");
- scanf("%d",&result);
- if(result==1){
- pass = pass + 1;
- counter = counter + 1;
- }
- else if(result==2){
- fail = fail + 1;
- counter = counter + 1;
- }
- else if(result !=2 and result !=1 and result !=-1){
- printf("輸入資料不正確 \n");
- }
- // counter = counter + 1;
- }
- printf("%d人通過%d人未通過",pass,fail);
- rate = pass/counter;
- printf("%f",rate);
- if(rate >= 0.8){
- puts("補習費漲價");
- }
- system("Pause");
- }
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