Eroare de compilare: user.c: In function ‘main’: user.c:5:5: warning: implicit declaration of function ‘strlen’ [-Wimplicit-function-declaration] freopen("paritate.in","r",stdin),freopen("paritate.out","w",stdout),scanf("%s\n",s),n=strlen(s); ^ user.c:5:91: warning: incompatible implicit declaration of built-in function ‘strlen’ [enabled by default] freopen("paritate.in","r",stdin),freopen("paritate.out","w",stdout),scanf("%s\n",s),n=strlen(s); ^ user.c:8:13: error: ‘c’ undeclared (first use in this function) c[j]=s[j+l]; ^ user.c:8:13: note: each undeclared identifier is reported only once for each function it appears in user.c:14:24: warning: left-hand operand of comma expression has no effect [-Wunused-value] l+=8,p=c[0]-'0',d=n=0; ^ user.c:5:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("paritate.in","r",stdin),freopen("paritate.out","w",stdout),scanf("%s\n",s),n=strlen(s); ^ user.c:5:45: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("paritate.in","r",stdin),freopen("paritate.out","w",stdout),scanf("%s\n",s),n=strlen(s); ^ user.c:5:78: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] freopen("paritate.in","r",stdin),freopen("paritate.out","w",stdout),scanf("%s\n",s),n=strlen(s); ^