online compiler and debugger for c/c++

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#include<stdio.h> #include<ctype.h> char stack[100]; int top = -1; void push(char x) { stack[++top] = x; } char pop() { if(top == -1) return -1; else return stack[top--]; } int priority(char x) { if(x == '(' || x== '{' || x == '[') return 0; if(x == '+' || x == '-') return 1; if(x == '*' || x == '/') return 2; return 0; } int main() { char exp[100]; char *e, x; printf("Enter the expression : "); scanf("%s",exp); printf("\n"); e = exp; while(*e != '\0') { if(isalnum(*e)) printf("%c ",*e); else if(*e == '(' || *e == '{' || *e == '[') push(*e); else if(*e == ')') { while((x = pop()) != '(') printf("%c ", x); } else if(*e == '}') { while((x = pop()) != '{') printf("%c ", x); } else if(*e == ']') { while((x = pop()) != '[') printf("%c ", x); } else { while(priority(stack[top]) >= priority(*e)) printf("%c ",pop()); push(*e); } e++; } while(top != -1) { printf("%c ",pop()); }return 0; }

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