Hello I just started programming in C at school. I have, as homework, to create a program i would use. I wanted to create one that would let me know where would i placed in LoL according to my placement wins, but i dont know where im having problems. Can you let me know what should i do?

Code:
#include <stdio.h>#include <stdlib.h>
int main(){
    int PMMR;
    int plw;
    int plwMMR;
    int nplwMMR;
    int AMMR;
    int WMMR=1300;
    printf("Introduce tu pre-reset MMR: ");
    scanf("%i",&PMMR);
    printf("Introduzca placement wins: ");
    scanf("%i",&plw);
    nplwMMR=PMMR+WMMR/2;
    plwMMR=((2*plw-10)*(50*(PMMR+1200))/2);
    AMMR=nplwMMR+plwMMR;
    if (AMMR>=0&&AMMR<=299);printf("Tu liga, aproximadamente, es: Bronze V");
    if (AMMR>=230&&AMMR<=459);printf("Tu liga, aproximadamente, es: Bronze IV");
    if (AMMR>=460&&AMMR<=689);printf("Tu liga, aproximadamente, es: Bronze III");
    if (AMMR>=690&&AMMR<=919);printf("Tu liga, aproximadamente, es: Bronze II");
    if (AMMR>=920&&AMMR<=1149);printf("Tu liga, aproximadamente, es: Bronze I");
    if (AMMR>=1150&&AMMR<=1219);printf("Tu liga, aproximadamente, es: Silver V");
    if (AMMR>=1220&&AMMR<=1289);printf("Tu liga, aproximadamente, es: Silver IV");
    if (AMMR>=1290&&AMMR<=1359);printf("Tu liga, aproximadamente, es: Silver III");
    if (AMMR>=1360&&AMMR<=1429);printf("Tu liga, aproximadamente, es: Silver II");
    if (AMMR>=1430&&AMMR<=1499);printf("Tu liga, aproximadamente, es: Silver I");
    if (AMMR>=1500&&AMMR<=1569);printf("Tu liga, aproximadamente, es: Gold V");
    if (AMMR>=157&&AMMR<=1639);printf("Tu liga, aproximadamente, es: Gold IV");
    if (AMMR>=1640&&AMMR<=1709);printf("Tu liga, aproximadamente, es: Gold III");
    if (AMMR>=1710&&AMMR<=1779);printf("Tu liga, aproximadamente, es: Gold II");
    if (AMMR>=1780&&AMMR<=1849);printf("Tu liga, aproximadamente, es: Gold I");
    if (AMMR>=1850&&AMMR<=1919);printf("Tu liga, aproximadamente, es: Platinum V");
    if (AMMR>=1920&&AMMR<=1989);printf("Tu liga, aproximadamente, es: Platinum IV");
    if (AMMR>=1990&&AMMR<=2059);printf("Tu liga, aproximadamente, es: Platinum III");
    if (AMMR>=2060&&AMMR<=2129);printf("Tu liga, aproximadamente, es: Platinum II");
    if (AMMR>=2130&&AMMR<=2199);printf("Tu liga, aproximadamente, es: Platinum I");
    if (AMMR>=2200&&AMMR<=2269);printf("Tu liga, aproximadamente, es: Diamond V");
    if (AMMR>=2270&&AMMR<=2339);printf("Tu liga, aproximadamente, es: Diamond IV");
    if (AMMR>=2340&&AMMR<=2409);printf("Tu liga, aproximadamente, es: Diamond III");
    if (AMMR>=2410&&AMMR<=2479);printf("Tu liga, aproximadamente, es: Diamond II");
    if (AMMR>=2480&&AMMR<=2550);printf("Tu liga, aproximadamente, es: Diamond I");
}