Eroare de compilare: main.c: In function 'E': main.c:7:14: error: lvalue required as increment operand p++,x=E(0),p++; ^~ main.c:7:16: warning: left-hand operand of comma expression has no effect [-Wunused-value] p++,x=E(0),p++; ^ main.c:7:25: error: lvalue required as increment operand p++,x=E(0),p++; ^~ main.c:9:39: error: lvalue required as increment operand for(x=0;*p>='0'&&*p<='9';p++) ^~ main.c:14:18: error: lvalue required as increment operand p++,y=x+E(l+1); ^~ main.c:14:20: warning: left-hand operand of comma expression has no effect [-Wunused-value] p++,y=x+E(l+1); ^ main.c:16:18: error: lvalue required as increment operand p++,y=x-E(l+1); ^~ main.c:16:20: warning: left-hand operand of comma expression has no effect [-Wunused-value] p++,y=x-E(l+1); ^ main.c:18:18: error: lvalue required as increment operand p++,y=x*E(l+1); ^~ main.c:18:20: warning: left-hand operand of comma expression has no effect [-Wunused-value] p++,y=x*E(l+1); ^ main.c:20:18: error: lvalue required as increment operand p++,y=x/E(l+1); ^~ main.c:20:20: warning: left-hand operand of comma expression has no effect [-Wunused-value] p++,y=x/E(l+1); ^ main.c: In function 'main': main.c:24:73: warning: implicit declaration of function 'gets' [-Wimplicit-function-declaration] freopen("evaluare.in","r",stdin),freopen("evaluare.out","w",stdout),gets(p),printf("%d",E(0)); ^~~~ main.c:24:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("evaluare.in","r",stdin),freopen("evaluare.out","w",stdout),gets(p),printf("%d",E(0)); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:24:38: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("evaluare.in","r",stdin),freopen("evaluare.out","w",stdout),gets(p),printf("%d",E(0)); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Non zero exit status: 1