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What is wrong at my code? Please Help me...

#include <stdio.h>
#include <stdlib.h>

int minimo(int a, int b);

int main(){

int t;
char p;
int m;
int n;
int i;

scanf("%d",&t);
setbuf(stdin, NULL);

for(i=0;i<t;i++){

scanf("%c %d %d", &p, &m, &n);

setbuf(stdin, NULL);

if(p == 'Q ...

What is wrong at my code?

#include <stdio.h>

int minimo(int a, int b);

int main(){

int t;
char p;
int m;
int n;
int i;

scanf("%d",&t);

for(i=0;i<t;i++){

fflush(stdin);

scanf("%c %d %d", &p, &m, &n);

if(p == 'Q'){

printf("%d\n", minimo(m,n));
}

if(p == 'r'){

printf("%d\n ...