Compilare: main.c: In function 'main': main.c:19:15: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(g<l) ^ main.c:8:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("ecuatii2.in","r",stdin),freopen("ecuatii2.out","w",stdout),scanf("%d\n",&n); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:8:38: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("ecuatii2.in","r",stdin),freopen("ecuatii2.out","w",stdout),scanf("%d\n",&n); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:8:73: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] freopen("ecuatii2.in","r",stdin),freopen("ecuatii2.out","w",stdout),scanf("%d\n",&n); ^~~~~~~~~~~~~~~~ main.c:10:31: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] x[0]=x[1]=y[0]=y[1]=0,scanf("%s\n",s),l=strlen(s),k=1,strcpy(q,s),r=strtok(s,"+-="),g=-1,d=0; ^~~~~~~~~~~~~~~