41 lines
971 B
C
41 lines
971 B
C
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#include <stdio.h>
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int main(void){
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int numbers = 0;
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while(scanf("%d",&numbers) == 1){
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int count = 0, i = 0;
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for(count = 0; count < numbers; count++){
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char ch, string[51] = {'\0'};
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int if_pass = 1, if_read = 0;
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i = 0;
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while(if_pass){
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ch = getchar();
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if(!if_read && ch > 32 && ch < 127) if_read = 1;
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if(if_read){
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if(ch != '\n') string[i++] = ch;
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else if_pass = 0;
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}
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}
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string[i] = '\0';
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i = 0;
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int if_true = 1;
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if(string[0] != 95){
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if(string[0] < 65 || string[0] > 122) if_true = 0;
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else if(string[0] > 90 && string[0] < 97) if_true = 0;
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}
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while(string[i] != '\0' && if_true){
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if(string[i] != 95){
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if(string[i] < 48) if_true = 0;
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else if(string[i] > 57 && string[i] < 65) if_true = 0;
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else if(string[i] > 90 && string[i] < 97) if_true = 0;
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else if(string[i] > 122) if_true = 0;
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}
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i++;
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}
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if(if_true) printf("yes\n");
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else printf("no\n");
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}
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}
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return 0;
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}
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