0_0_21605193_25531.cpp: In function 'int main()':
0_0_21605193_25531.cpp:9:33: error: 'strcmp' was not declared in this scope
while (gets(buf)&&strcmp(buf,"")){
^
0_0_21605193_25531.cpp:10:21: error: 'strlen' was not declared in this scope
int len=strlen(buf);
^
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