Main.cc: In function ‘int main()’: Main.cc:15:16: error: ‘strcmp’ was not declared in this scope if(strcmp(a[j].name,b)==0){c=j;break} ^~~~~~ Main.cc:15:16: note: suggested alternative: ‘strtoq’ if(strcmp(a[j].name,b)==0){c=j;break} ^~~~~~ strtoq Main.cc:15:49: error: expected ‘;’ before ‘}’ token if(strcmp(a[j].name,b)==0){c=j;break} ^ Main.cc:19:18: error: ‘struct present’ has no member named ‘n’ a[c].n-=avr*x; ^ Main.cc:23:21: error: ‘k’ was not declared in this scope for(k=0;k